Dirty money? nah.. you know what's dirty? fiat money, it's being passed through different hands and bacterias are also being passed to the receiver which can cause cough, cold and other mild disease that you'll never notice.
Buying crypto is hard for those people that are still skeptic and not sure if they will have it or not.
I think. The mean of dirty money is money that is often used for crime. and that made the public afraid and skeptical. but. the reality is that fiat is often used as crime rather than crypto. but crypto is harder to trace.
Not if you have means to trace and survalance.