There are differing concerns. The first is what you're addressing: is this particular bit of value from a bad place? Both systems have issues there. I still

There are differing concerns. The first is what you're addressing: is this particular bit of value from a bad place? Both systems have issues there. I still think fiat is better, because the bank the transfer originates from has presumably done KYC. I also don't think it's that big of a deal; there are much worse things to do with drug money. The second is entirely different: is accepting this currency going to help proliferate problems associated with the currency? I.e. does accepting Bitcoin legitimize it and implicitly encourage others to use Bitcoin, amplifying any environmental or money laundering concerns? I don't have a hard stance, I'm not a member of any of the relevant groups. I can see where they're coming from, and I don't find it a crazy stance. Really, either side seems fair.