As I have looked more and thought more, really these are all at least somewhat centralized except pure Steem and somewhat Utopian. Utopian is much less centralized but they still do censor plenty through their guidelines. That generally is fine, but it does exist.

I just saw a conversation about that on their Discord where someone asked if their project would be allowed or not. I'm not saying that's wrong, but that I was somewhat mistaken in terms of censorproof decentralization.