That's because it is all built on greed and a lot of lies.

The only time you actually are part of the trustless system is when you are sole custodian of any private keys necessary to access the coins.

The issue with this is that a whole lot of people have no idea what it is, how it works, how to be part of the system and how to keep keys secure and safe at the same time.

And it is fine. People can't know everything.

But one thing I know, if you buy stuff you do not understand and then you loose money, it is on you.