>>feross+(OP)
First: the dictionary defines censorship differently. AstralCodexTen's definition even seems to ignore the fact that e.g. Zuckerberg and Musk are very much "people in power". And it adds "customers" to the definition. In what perverse mindset is a speaker a seller?
Second: is this about freedom of speech? If it is, say so, because moderation nor censorship exclusively define that. Muddying the debate by giving some weird definition of two concepts isn't going to help that.