This. Information included his social security number, and other sensitive personal information. Unless I misunderstood it all along, I don't think Musk's "free speech absolutism" was ever genuinely absolutist in the sense that he wanted Twitter to be like Wikileaks where you could freely share information that would include, for example, blueprints of weapons of mass destruction, or the identity of spies in first world intelligence agencies; stuff that constitutes national security breaches.
This would appear to be more of the same. Bad faith distortions with intentionally disingenuous interpretations of his commitment to free speech as attempts to character assassinate Musk.
I don't care for Musk vomiting up the MAGA stuff nonstop every single day on his own platform, while also attending political rallies overtly advocating for one party's candidate, even his predecessor Posobiec didn't do that, nor have other CEOs of the major corporate tech companies the political right often assails, that's peak hypocrisy, but I find these petty snipes hurled at Musk even more obnoxious.