An established social media platform's most valuable asset is the size of its userbase. Even with the reach of Musk, I think it would be hard to attract a large enough userbase to make the product more compelling than Twitter.
Twitter can leverage a huge amount of data about personal preferences, interests, relationship status, political leanings, income, usage profiles, message habits and content, social graph, and location.
If you specifically wanted to clamp down on certain demographics, it would be an excellent way to locate them.