Didn’t some judge rule recently that Trump wasn’t even allowed to block someone on Twitter???
Sort of.
If Trump wants to have a completely personal Twitter account he can do that and ban anyone he wants.
The problem is he uses @realDonaldTrump for official government business and has staff, paid by the taxpayers, maintain and tweet from the account.
The judge says this essentially makes it public and he can't ban comments on 1st Amendment grounds.