> shitty people scamming other people: Yes, everyone knows. It happens with normal money as well.

The thing is, governments don't want people to get scammed, and so they act to prevent scam avenues. But unlike, say, the trad-bank system the percentage of "scam" vs "legit" operations in cryptocurrencies is drastically skewed to the "scam" side, made easier by the anonymity that cryptocurrencies provide by design.