Sure I agree with that if we want to define "algorithm" in such a way that "if (url.contains('sex')) ban()" is "censorship by the algorithm" I just don't think

Sure I agree with that if we want to define "algorithm" in such a way that "if (url.contains('sex')) ban()" is "censorship by the algorithm" I just don't think that's a useful definition. You should just say "Facebook is censoring the content".