In as much that there are a lot of scams in the bitcoin ecosystem and the entire crypto space as a whole, greed is the only reason why a lot people in the crypto space and bitcoin ecosystem fall for these scams. It is about time people in the crypto space need to research before investing into anything in this ecosystem. Knowledge and understanding are the key elements need to avoid being scammed in the bitcoin ecosystem. Scammers are always looking for greedy people in the ecosystem to scam them. A lot of people in the crypto space do not really know what bitcoin is and its significant purpose in the entire financial space. Due to this, people easily get scammed.
Fraudsters have learned not only to create super-attractive conditions for their deceptions, but also to involve influential advisors so that this scamming deal looks very believable. People get these tricks and lose money. By the way, I agree with you that this is due to greed