Fungibility (or lack of it, not sure about how to use the term tbh) what can be done? I don't like the idea of using some Bitcoins that were once used by some criminals or something.
There is no fungibility issue for me. I don't research the "history" of the bitcoin I receive, where they have been and who used them. As long as I receive my coins from a legit source (I wouldn't get in trouble for it), I don't need to know and I don't care. The bitcoin that we all circulate today, there are silkroad and scam money mixed inside, where do you draw the line?