what do you think about tornado.cash? It's apparently a very effective mixer. I wonder what law enforcement can do if someone ends up using tornado_cash.
There is absolutely no way of knowing if the money is good or bad. If you consider every mixed_cash as bad, you would be forced to assume that the entire cryptocurrency is bad bec of how the money flows.
I don't understand all technicalities of cryptocurrencies, however you make it illegal to mix with known stolen cryptocurrencies - and then it won't get mixed; else yes, it's a problem if your ethics make you okay with rewarding criminal behaviour by allowing stolen money to be spent.
There is absolutely no way of knowing if the money is good or bad. If you consider every mixed_cash as bad, you would be forced to assume that the entire cryptocurrency is bad bec of how the money flows.