When it comes to money people like trying out things the way they see fit, try first learn later is the rules of newbies and thats why they always get scammed easily, HYIP, Pyramid Scheme, as dangerous and alarming these two are people still join them till date, both crypto and internet is not the evil here, people are to be blame for what happened to them
We must not blame the people because they don't know on what are happening inside the internet world. We can blame them if thet have already enough knowledge on what is happening in the internet and they can easily scam by other people, that would make us to blame them but if they don't have enough knowledge then we can't blame them. Crypto is not evil, in fact crypto helps us to earn money and find some way on how we can earn more just for example bounties, trading and investments so I probably say that crypto is not evil.
The scammers are to be blamed but victims are also to be partly blamed. Remember that being ignorant to the law cannot exempt you. People are scammed by HYIP because they are after for the money. Everyone becomes greedy when it comes to money. Pretty sure there were doubts on their minds but greed gobbled them up. If they are not so sure, they could consult educated people or the authorities itself and ask for guidance.