I don't think that mixing falls into the category of bad actors in Bitcoin world. They are doing a great job for cleaning our of bitcoins and are increasing the privacy. The use case might make somewhat fall into the category of bad actors, however that doesn't makes them bad actor.

Gambling has always been called as a bad actor for the society either in Bitcoin world or in fiat world. The Gambling has caused some trouble for those drunkards who plays without any control over their emotions and lose everything in the game. Other than that general point of view the gambling in Bitcoin is also as harmless as other forms of gambling, but it depends on the one who is gambling.

Centralized exchanges are the best actors, calling them as bad actors is an insult to the whole crypto-community. It's because of those centralized exchanges that many new users have been able to start crypto trading. Those centralized exchanges are user-friendly and they are easy to work with for beginners. They offer so good service to the users and thus as a result the crypto users are getting hinger in number.

different things for different reasons

gambling is trying to get wealthy via high risk

people entering bitcoin can do wiser things to increase their wealth. by hoarding bitcoin. but to then hand bitcoin to a service who in most cases has algos where "the house always wins" is not wealth creating. its the DREAM or the pursuit or the fantasy of wealth creating. where in over half of cases people lose. yep for each winner must be a loser. and the higher the multiplier win reward of gambling is, means the more losers are needed to fund the winner.

bitcoin is different. bitcoins risk management is different. avoid putting funds into third parties promising riches
i can guarantee you no one went from rags to lambos via gambling

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mixing is a fake promise made by criminals desparate to grab innocent peoples funds and palm off criminal gains on those innocent people. leaving the innocent people holding the bag of red flags that make services suspicious.
mixing DOES put people onto watch lists. its in regulations in services own polices. its not something you should ignore even though the criminals think its not a thing. all they care about is recruiting innocent people to hand over funds. they dont care about the innocent people after handing them ill gotten gains.

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cex's if regulated will pass on details if you are flagged for suspicious behaviours. this means if you stay clean "government" wont know about you. however CEx and any service can and does sell your information to other businesses, so read their policies to see what they do with your data. and if you dont like the terms. dont use them. especially the ones that mention things like "we can close your account for any reason without warning"

You have a great point. But I would try to break it down for you the best way I can.

#Bitcoin gambling and bitcoin mixing: this are considered bad by people because of morals, this isn’t a concrete view because morals differs, gambling isn’t illegal (atleast in many countries) and people has different motive for using Bitcoin mixing higher reason is to protect their privacy (anonymous). Honestly if no one is hurt or any one funds stolen then there is nothing bad using any of the two.

#Centralized Exchanges: every strong bitcoin enthusiast would know that centralized exchange goes against the value of crypto-currency which is decentralization, there are dangers and live examples is the bankruptcy of FTX where many lost their funds, attacks on Trust Wallet where over $100,000 was stolen. Centralized exchange doesn’t give you that autonomy even over your own funds which is bad.

Do not mind the rubbish.

Gambling is not illegal, but you can see Muslims or some people that detest gambling because of their religion to call it illegal with passion.

Some people are not also using mixers only what they know is that mixers are used by bad actors, they do not know that banks and centralized exchanges too are used by some bad actors.

Let me answer your question.
Assuming I am into internet fraud, I scammed a white woman using western union or money gram, I successfully scammed the woman without trace. I can decide to use exchanges. There are some scammers that have been linked to exchanges. Not only that, there are some scammers that are using exchanges too to do their work, not all scam transactions can be known or investigated.

Life is scam if you can not avoid scam.

Gambling and mixing services are often labeled as "bad actors" within the Bitcoin community due to several reasons. Firstly, gambling using Bitcoin raises concerns about the integrity and transparency of the platforms involved. Unregulated gambling sites can be prone to fraud, unfair practices, and lack of player protection. Additionally, the anonymity provided by Bitcoin can attract illicit activities and money laundering.

Bitcoin mixing, on the other hand, is perceived negatively because it allows users to obscure the transaction history and break the traceability of funds. While privacy is an important aspect of cryptocurrencies, mixing services can be exploited for illegal purposes, such as hiding the source of illicitly obtained funds or evading taxes.

These negative perceptions are not unfounded, as there have been instances of scams, fraud, and criminal activities associated with both gambling and mixing services. However, it's crucial to note that not all gambling platforms or mixing services are inherently bad. Regulated and licensed gambling operators and responsible mixing services exist, emphasizing transparency, fairness, and compliance with legal requirements.

Ultimately, the goal should be to promote responsible and secure use of Bitcoin, ensuring that gambling and mixing services operate within a regulated framework that safeguards users and prevents illicit activities.

why is CEX considered a bad actor in Bitcoin? it is precisely because of CEX that crypto adoption is easier and crypto trading is more secure. even though there are several cases where CEX went bankrupt or took the money away, this is only natural, because that is the negative thing about CEX, but that doesn't make CEX a bad actor in Bitcoin, we have to see it in full, because there are still many other CEX platforms that run their services well.

Gambling source is included in high risk money because not all countries are allow to gamble and some people who live in restricted jurisdiction can gamble as long as the casino doesn't restrict their jurisdiction. They also can use VPN despite their internet provider blocking the casino domain, usually the casino will ask to verify KYC to make sure the gambler not lying.

Mixing source is included in high risk because the government don't like privacy and want to control or monitor everything.

They'll link to anything they want to just to give that bad impression for bitcoin. Look, they're already concluding that mixers and casinos are bad things but aren't they looking at the good side of it that it increases someone's privacy if he uses a mixer?
Whilst in gambling, is there any different from it as someone does bitcoin gambling and those that are gambling in the traditional casinos? I don't think that there's that much difference on it as it's just someone who gambles bitcoin as the currency and someone goes to the casinos that gambles with fiat, they're bias and simply hate bitcoin.

Firstly we must recognize that Bitcoin can achieve its goals and objectives without gambling and mixers. Bitcoin is a currency that is used for transactions and investments. Both gambling and mixers are services that adopted bitcoin or affiliated themselves with the coin.

We should also know that almost every good product or service can be misused by negative actors. Drugs are essential in the medical field but bad actors convert them to harmful substances. Guns are used for hunting and self-defense but criminals use them to commit atrocities. I can mention more examples. Using bitcoin for gambling is like using fiat for staking, it becomes a problem when it leads to addiction or is used for criminal activities like money laundering.

Mixers are wonderful services that promote privacy and I am a fan because it suits my way of life. I have never been engaged in any criminal activity but I like the mixing services. But it doesn't need that criminal elements will not take advantage of this great product. And the use of this service by criminals doesn't make the service bad.

I want to clarify the question back to you, are Bitcoin actors or individuals themselves abusing the power of decentralization?

Because basically it is impossible for us to generalize Bitcoin as a whole as the bad actor behind the ongoing action? have you ever heard of humanitarian donations in the form of Bitcoins? so we talk about actors, both individuals and specific groups. So it is difficult to find the background that a fully centralized exchange provides facilities or access to any crime. They have enforced KYC/AML, so neither CEX nor Bitcoin as an option can be assigned to any category of criminals , except users who must be prosecuted.