The only people that would buy dirty crypto are people with dirty cash. Even then, it would be a profoundly stupid transaction from a cash flow or security perspective. Those cryptos have basically zero value, and you just made yourself traceable in an area of technology you probably know nothing about, except some blurb on the Internet about how secure it is. If you’re going into business in ransomware or money laundering, and you’re calculating profits by the exchange rate on Coinbase, you are a moron, and you’re about to get wrecked.