That is sad, but there are some rules for investments
- Don't invest money that you can't afford to lose
- Don't invest in something that you don't understand

If people were scammed with schemes like pump and dump, exits scams and shit tokents i think that those people should learn that in the hard way, also they need to know what they are doing in first place, the problem is that they usually always try to blame to someone else by their own losses, and yes maybe there is problems of the scammers in first place, but if they weren't greedy in first place, those losses can be avoided