No. It’s not. Musk bought Twitter and took it private. Tesla is still a publicly traded company that Musk (as I understand it) actually had to sell a non-trivially portion of his stock in in order to finance part of the deal.

Tesla is not his personal fiefdom. Stop.

You're thinking of Twitter (TWTR). TSLA is Tesla, which is still publically traded.

You're confusing TSLA with TWTR.