Nobody is a true free speech absolutist; and Musk least of all[0]. There are always limits to speech.

Things like libel, threats, blackmail, etc are also speech, and yet banned or restricted in some way. Social media are doing a lot of work exploring the edge cases of these, and it's possible laws need to be updated to account for the results.

[0] Years ago Musk cancelled a Tesla order from a critic. On Twitter, it didn't take him long to ban a lot of satirical accounts.

I agree with you, but I believe it is the case that Elon has previously described himself as a free speech absolutist, so this whole episode is exhibit 487 in the case for Elon having no idea what he's talking about.

He did, and it's both impossible and blatantly untrue. I just thought I should make that explicit. It wasn't meant as disagreement.