For a while, credit card processors in the US were pressured by the government not to authorize charges, even if Wikileaks would accept them as payment. That make it effectively impossible for Americans to donate that way.
Even if that’s different now (which I’m not sure it is), there will always be the next important cause.
This is a great point thanks for making it. imho it could be worded better, but it subtaintially invalidates the arguments like "bitcoin can only be used to waste energy and buy buy drugs"
There's no actual user value involved. "Avoids USD" is almost a religious statement. If one is concerned about volatility, then Bitcoin is a bad choice; it's more volatile than any major currency and most commodities. If one is concerned about the US government's future behavior, there are other major currencies. (And really, a currency is a bad place to park your wealth.) For any legitimate financial aim, there's a better solution than Bitcoin.