There's a lot inconsistent with someone masquerading as a "free speech absolutist" whilst actually drawing the line in a different place, in this case a place which has all sorts of arbitrary new offences like references to the word "cis", ADS-B feeds, and parody accounts and whatever else has annoyed him recently whilst removing more posts at government request than his predecessors, but is mostly cool with racial hatred.
It is disingenious of progressives to claim that he isn't, because he doesn't allow xyz edge case, when they concurrently believe that being a free speech advocate doesn't require allowing all speech.
Even in the US, freedom of speech IS restricted: the Supreme Court put the bar very high but it didn't say you could say anything. State secrets can't be revealed willy-nilly; even lower, you can't enter a non-disclosure agreement and then violate it.
The "lane" is that we try as much as possible to put clear, consistent guideline that apply to everyone through a legislative (actual laws) and judicial (precedent) process. This is absolutely not the same as Musk deciding on his own, inconsistent, ridiculous fits of drug-addled rage, where he bans the word "cisgender" or @elonjet for his own safety and then allows complete nazi-"WE WILL KILL YOU BITCHES" stuff - and that's only one of many examples.
Progressives: Elon doesn't care about free speech, he cares about limiting the speech of progressives in favor of the extreme right
Also progressives: Free speech should have limits to protect minorities from aggressors
Nothing at all inconsistent about these two positions, regardless of whether you think that either one is a good idea, or even true.
Elon touts being a free speech absolutist, but limits speech on his platform in a … whimsical … manner.