I have my own schizo theory (that sounds pretty believable to me but your mileage may vary) regarding Musk purchasing twitter and it is based on the very convenient timing of Tucker Carlson being unsuspended from twitter. But to lay out this theory I have to sperg about something entirely unrelated (on the surface) first.
Since this post is going to be involving a lot of politisperging allow me to preface that to many I would be considered a Right Wing Extremist and said categorization is not all that inaccurate.
1. The sperging that is on the surface unrelated to Elon buying twitter
I will state this bluntly, There is a concerted effort by Republicans at all levels of society to seize power and implement their will, permanently. This involves the capture or suppression/neutering of all Institutions, Elected Offices, Churches, Financial Markets, Courts etc etc. This effort is being lead by Religious zealots, Extremist Ideologues and right wing/general business interests and is finding massive success on both the State and Federal level. This movement's most powerful weapon besides their reserves of cash, political influence and literal weapons is their ability to influence and propagandize their followers and supporters through media both legacy and social. Look at Christopher Rufo, he has admitted in still public tweets that he was stirring up the CRT panic as part of the culture war and despite these tweets being public Media institutions are STILL parroting the narrative he inserted. This media is obviously has the power to make or break people, this is where Tucker Carlson, Musk and Twitter come in.
2. Musk, Twitter and Tucker
The day that the big announcement came Tucker was unsuspended from Twitter and posted two simple words "We're Back". Now according to what I have heard this was because Tucker voluntarily deleted a tweet calling Richard Levine a man, while I cannot confirm this seeing as how Musk does not officially have control yet it seems likely. That tweet (with the implication that Musk is the reason that the suspension was lifted) in addition to prominent RW figures showering praise on Musk, in my opinion this looks like an effort to endear Musk to right wingers, to make him a member of the team regardless of his actual political stances.
3. The potential reasons for this
Either Musk is onboard with the Movement potentially after being paid off with future guarantees behind the scenes or this is just The Movement piggy backing on a golden opportunity. You also have to remember that Musk is a Billionaire, and the Youth (which make up the resurgent American Left) are everyday more and more Anti-Billionaire, The Movement is extremely Pro=Billionaire.