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.
I can't in good conscience ignore what I know because there are other things I don't.
If I murder a drug dealer, steal his briefcase stuffed with 100-dollar bills, and eventually donate some of that money to you in USD, you will happily accept it "in good faith". But if I work hard as a nurse, exchange some of my hard-earned savings into Ether, and donate it to you, you will refuse because "there is no uncertainty about where they come from"? I'm confused. How are you certain that the USD donations are clean money, and certain that the Ether must be dirty money? I guess just the vague association with "crypto" is enough?
Just admit that this is about ideological purity and nothing else.
„Even Wikipedia/Wikipedia, a charity with high ethical standards accepts it, how bad can it be?“ might not be the most well-reasoned conclusion, some people will come to it.
If it doesn‘t disproportionately endanger the „core purpose“ of Wikimedia, why not avoid something like that altogether?
Yes, if you don't tell me you did the murdering I would accept the money. Your actions are on your conscience.
> But if I work hard as a nurse, exchange some of my hard-earned savings into Ether, and donate it to you, you will refuse because "there is no uncertainty about where they come from"?
> I'm confused. How are you certain that the USD donations are clean money, and certain that the Ether must be dirty money? I guess just the vague association with "crypto" is enough?
I have moral responsibility for my actions. Due to the way a blockchain works, I can't accept or withdraw your Ethereum donation without contributing to the blockchain with a transaction fee. I can't fault you for putting it there, that is a matter for your conscience, but I can fault myself for accepting it.
> Just admit that this is about ideological purity and nothing else.
It is not about ideology at all, but about conscience. I believe ideology is almost as harmful to humanity as the blockchain.