That's not an opt out, but rather routing around. And you can make the same argument about online forums - forum owners' decisions are about what is appropriate

That's not an opt out, but rather routing around. And you can make the same argument about online forums - forum owners' decisions are about what is appropriate for their desired audience, and users are perfectly free to seek out their desired type of comments from other forums. I'm not making an argument about what level of opinionated curation is appropriate or justified. Rather it's just disingenuous to say something is censorship when the other team nominally supports it, but then throw out specific reasons why your team's favored censorship shouldn't actually be considered censorship. There are always legitimate sounding reasons for centralized distributors to police the content of speech, and it's also always censorship.