You do realize that X is now it’s official name right? Elon changed the name to X and deprecated the twitter name. At the end of the domain registration, he is not going to re-register twitter.com as the domain name, and because he owns the trademark on it, he is going to sue anyone who tries to re-use the domain name.
I hope he realizes that's not how it works. Companies own domains they don't use for this exact reason. Hell, most major companies own hundreds of misspelled versions of their domains across many TLDs for user safety.