Scammers are everywhere, no one can really eradicate those people. They're making a living out of it, the only way to deal with those type of person is to do due diligence and by not trusting anyone who you do not know. Crypto world is infested of scammers.
Indeed scammers are making a living through this and will going to exist as long as there are greedy people who easily believe their offer. Thats why having a knowledge on what you do is a must in crypto, so you cant blame anyone but yourself if something bad happen since its your decision why you end up being there.