People should be allowed to what they want with their own money.

And what they do may seem (to you) stupid, inefficient and wasteful, but it's still their free choice and you have to accept it.

Crypto will exist, people will continue to be stupid and there's nothing you can do to change it.

Getting angry and upset because someone is wrong on the internet only ruins your own life and the durability of your keyboard.

What you should do instead is see how you can insulate your own life from the consequences of their mistakes.