I actually think this is reasonable. The account was broadcasting his live location at any given point in time and there's a strong argument it presented a legitimate safety risk given so many people's hatred towards him.
It's also hard to say he's banning free speech against himself when it feels like half of twitter is anti-Elon sentiment these days.
The account was re-broadcasting publicly available information. Anyone who wanted to harm Musk would easily be able to find this information themselves without the twitter account.
True, but the account significantly lowers the bar to finding that information, making it much more likely someone who wishes to do harm could act on it.
Seems to me that a lot of the people Elon has targeted with the so-called "Twitter Files" would say they were making the same type of situational harm-reducing judgment call.
It's also hard to say he's banning free speech against himself when it feels like half of twitter is anti-Elon sentiment these days.