Twitter is a disaster clown car company that is successful despite itself, and there is no possible way to grow users and revenue without making a series of enormous compromises that will ultimately destroy your reputation and possibly cause grievous damage to your other companies.
I say this with utter confidence because the problems with Twitter are not engineering problems. They are political problems. Twitter, the company, makes very little interesting technology; the tech stack is not the valuable asset. The asset is the user base: hopelessly addicted politicians, reporters, celebrities, and other people who should know better but keep posting anyway. You! You, Elon Musk, are addicted to Twitter. You’re the asset. You just bought yourself for $44 billion dollars.
The problem when the asset is people is that people are intensely complicated, and trying to regulate how people behave is historically a miserable experience, especially when that authority is vested in a single powerful individual.
What I mean is that you are now the King of Twitter, and people think that you, personally, are responsible for everything that happens on Twitter now. It also turns out that absolute monarchs usually get murdered when shit goes sideways.
Good luck. You’re gonna need it, Wario.