Well it seems like Elon is reneging on his previous commitment to free speech. - https://twitter.com/elonmusk/status/1589414958508691456
Serious question: Is there an alternative narrative here? People are acting like Musk changed course for no reason, but are there no real claims that the account perhaps had started to engage in other rule-breaking content? Note that I'm asking for an actual steelmanned argument for why there's no possible defense of Musk here, not why people have high priors to just assume there's no defense.
This has absolutely nothing to do with the freedom of speech. It is related to breaking the promise (made when joining any company as an employee) not to divulge confidential information. This is a restriction on the freedom of speech that one knowingly agrees to when joining the company.
If I knowingly posted sensitive internal discussions from my employer I would be kicked out. Or worse: if I worked in a hospital and shared some sensitive pictures I might be hit with heavy fines or spend time behind bars. My 2c.