I think some of the reasons why lots of people tend to get scammed easily is because they are so trust-worthy and that they believe that this crypto-world can change their lives for the better. Another, is that they have no idea or lack of idea on the project they are involved with.
Well, when they look at other people's profits, they believe that this market is nice and easy to make money. They then went naive and invested in bullshit projects in this market, or believed in the scammer's gifts. They need to get to know this market thoroughly before deciding to invest, or they need to be scammed a few times and then they will be smarter and more careful than before.