Censorship is, generally, bad (barring *very* limited cases involving, eg, release of private information, or of critical military secrets)
Keep in mind, though, saying "I disagree" is not censorship. Saying "You're a horrible person for saying that" is not censorship. Saying "I will not allow you to say that on my platform" is not censorship. I'd only count it as censorship if 1. the actual government is penalizing you for saying the thing, or 2. you are being kept from expressing an opinion or a viewpoint on a platform that you control, or that does not object to you using their platform for that purpose.