I think barto123 nailed it.  If an deal looks too good to be true, it probably is.  Use your common sense - It prevails.

I just end up playing with all those scammers until they can't deal anymore with me and block me :D

I have a good time messing with scammers and I waste their time hehe

It definitely should be there, and OP can get some merits in there too. This kinds of schemes are getting traction in my country with more people needing money. Good thing that most of my relatives, friends and acquaintances did not fall to this scheme. Hopefully, they should never know of this or participate because that just sucks.

Haha this is not a new scheme to me. Thieves have been using this way steal people money for many years. They always disguise their ponzi schemes into a blockchain based project such as tokens, bitcoin, etc. Its funny that there are many people believe in these high yield investment programs and as the results, they lose a lot of money. I guess that the dream of being wealthy makes their mind program purblind.

The bad news is the more people being deceived, the more notorious bitcoin is. In my country, people who do not have knowledge of bitcoin or cryptocurrency will claim that bitcoin is a scam and sooner or later, it will be destroyed. And if you are caught using bitcoin, being arrested can be a consequence. Because of those frauds, the government has decided to stop any business related to bitcoin and cryptocurrency. And they would not resolve any issue with losing money while investing crypto. This is totally unknowledgeable and we could not do anything at all to amend the current states

This is not new. This modus is very old, most probably older than Bitcoin itself.

All kinds of exclusive and premium packages have been sold online and offline. There's a package for someone who wishes to excel in forex trading. There's another one for someone who wishes to make a lot of money in trading stocks. There's also packages for those who want to earn more in the advertisement industry. Not so recently, there were also lots of tutorial packages offered to those who want to get well informed on how to make money in dropshipping. The list could go on and on.

Well, ditch them all!

Even if that is an old trick, it could work to trick or scam new people in the crypto world because they will not think much about the scam. They only think that the profit is big, so that makes them join with those programs. If they can search for another info, they will found that there is no biggest profit in the short term, and they will know that it is just a part of the scam that will happen in the crypto world. The first thing that we should consider is a scam or not is the profit they offer, and if the profit looks too good to be true, that will be a scam. I hope that people can learn more about every investment offer they got, and they can search for more to find if that is a scam or it is true.

This kind of scam is old tactic and really common for every business we have so we really need to be more careful when we are just starting a business or investment because if we dont, even if the business has a good potential you won't reach it and will get disappointed early. We can also have a mentor that you well known so that you can trust him just like me, my mentor guides me for every act i am doing and now i am a successful bitcoin investor and trader.

Just because the price of bitcoins is increasing and at the same time media is covering it in many parts in weird ways like " people became millionaires with this simple trick and such " my local news covers Bitcoins as something that would make you rich overnight. People who know nothing about it tends to believe and these scammers uses this to pry on the uneducated people.
-it's too good to be true
-why should you contact someone when everyone is capable of handling their funds themselves.
-it's impossible within a short period see the charts.

Where is the source of messages? Would you mind sharing them, please.

400% short-term profit is very high and I only see the profit claim from PONZI. If anyone invite me to join group with profit claim at 10 to 20 % each month, I can consider to participate. 400%, no I don't look at it.