It's strange that people still believe in scams like that in 2023

Yes, the story seems somewhat strange, because Bitcoin wallets do not provide support for WEB3, but the only possibility that I see reasonable is that his friend used TrustWallet, this is a WEB3 wallet, which is a diversified wallet that can contain many coins in addition to bitcoin and can be linked through most sites .

If the wallet is linked to the suspicious site and they get a SEED then they can steal all the coins in the wallet including Bitcoin.

This type of baits are very very common in crypto space. I personally dislike to use Telegram groups because of it. I obviously confirm human greed is true evil in this. But we should shame thiefs as well. Crypto thiefs are like the worst kind on internet. They know there is nearly noone to stop them. They sometimes get very very cocky even. I wish we could have some kind of proper barrier to avoid stealing after we permit 3rd parties to connect to our wallet.

I guess your friend didn’t had much amount in his wallets, that’s why without any second thought he clicked on those malicious links and invited himself the trouble. As a newbie you should always try to learn the basics. There will be tons of threads here on the forum regarding which wallet to choose and how to store your funds more securely, but rather than going through it, he just got greedy and clicked on those links. Now nothing can be done, this will only be used as an example now on how to be more careful about your wallets and coin.

Why are humans so quick to pass judgement and draw conclusions on certain behaviours exhibited by others? It could have happened to anymore. It may not be greed that was the motive behind your friend's action to follow the Telegram message prompt it may have just been curiosity. Wanting to know what would happen if he clicks on the link. Well now, he has had to learn from personal experience through the loss of his assets that has been incurred.

So for newbies reading this, I will reiterate the following security tips to abide by whenever you are online. It will help keep your bitcoin safe.
- Use Cold Wallets
- Secure Your Devices- have the latest update of your system, install strong anti-virus and firewall protections
- Keep your seed phrase in a safe place
- Ensure you have a strong password. Change it if you ever feel that it has been compromised
- Be aware of phishing attacks - It may be like the one the OP narrated in his story
- Be sure to double- and triple-check the recipient's wallet address.

In this case, it's the reason while we encourage everyone to be careful of exposing it's wallet secret code, assuming the wallet was hacked the seed phrase would have been changed and it won't have access to the wallet, your friend just filled all the necessary information that's attack to the wallet including the password, that's the reason why he could be able to see any figure or amount of Bitcoin that remains in the account. Let us try to be careful and mindful on the way we expose our wallets password to the public, especially in the internet

The lack of common sense is what's not good. They probably got a "double your amount" message in Telegram, but I rather see it as a lack of common sense than blindness from greed. When someone in the street comes and tells you that you'd get $10 if you gave $5, you did, and they simply disappeared, would you be greedy or dumb?

One should be very careful with phishing links nowadays, and I'm sorry your friend lost money due to some telegram scammers. Like others, I don't quite understand how that happened, but in any case, it seems hypothetically possible to me. Greed is something to fight, I agree, as it doesn't make people better. But it's also important to remember that your friend is a victim, and victim blaming is a wrong social practice. Yes, he should be more careful, but no, it's not his fault that he lost the money. It's the fault of the scammers.

First of all my condolences for your friend. In fact your friend may be new he did not understand the type of fraud scammer. Why people use that invested wallet in different places after investing. Actually those who are new should first gain experience here and then invest. Your friend may have entered here but invested without taking anything well. That's why it's not right for newbies to invest so early. First clear these issues and then invest.

Honestly, I am pretty skeptical that something like that is even possible. Legitimate wallets would not just hand over your seed to some random third-party site using WalletConnect protocol - I mean, that is just common sense. And to the best of my knowledge, there has never been a single case where that has happened.