The point is that the constitution doesn't mention "censorship". You may be right that censorship does violate the first amendment, but there are precedents tha

The point is that the constitution doesn't mention "censorship". You may be right that censorship does violate the first amendment, but there are precedents that establish that censorship is permissible in certain circumstances. Twitter's best line of argument is to go directly to violation of their First Amendment rights, and avoid getting side-tracked on questions of "is this censorship" and "is censorship constitutional in the general case".