To be fair Facebook products ban and censor based on ideology, which is pretty extremist in the traditional (say, 10 years ago) point of view.
All corporate media (and most media of any kind) has banned and censored based on the owner’s standards, including ideology (whether the owner’s own ideology, their perception of that of the audience or regulators they wanted to curry favor with, or some combination.)
It is neither novel, nor—except to the extent that the ideology itself is—extremist for media to do that.