What part of this is "authoritarian censorship"?The part where the speech is a fucking fabrication used criminally to create a false narrative having to be shut down for, dunno, public safety?
Let's say I am an influencer with millions of followers and randomly one day decide to post "Trump is planting a bomb on NYC's whole subway transit system!!! Get out now!! Start a riot on the streets and break something!!". Naturally, any person with half a brain will either immediatelly dismiss this as an insane lie, or do a 5 sec research proving it to not be true. However, a not-insignificant part of those million followers will either actually take to the streets in a riot, or just retweet/parrot the post by the thousands, perhaps even adding their own little twist to it. In a short time, you now have lots of people repeating the same thing on a large scale, and more idiots are bound to believe it.
Furthermore, even if you don't agree with this - just as Brazilian law DOES NOT grant free speech to Nazis like the US does, and Germany DOES NOT permit Nazi symbols to be displayed anywhere (check Wolfenstein German release) - this is how the law is, and has been, for a long time here. Musk knew what he was doing, decided not only not to comply, but also make a clown of himself, and now is having the law applied to his company.
Edit: for further clarification - not a single post is being censored for saying "I hate Trump", "I disagree with Trump", "His policies are shit". It's the "Trump is doing [terrorist attack/eating babies/has a secret stolen stash of public money]