He is fucking with a vital national security interest and ally, the CIA and national security community are taking notice and will know why and how it it happened. Elon is being viewed more and more as a national security risk in many quarters and his company does top secret government work with SpaceX.
With control of a twitter turned into magavision, he could replace Trump as a power broker between the GOP and its base. Basically own and control them like Trump using fear and intimidation and far right allies on Twitter. If they should gain power again Elon would own America, if his plan worked out, perhaps that was the "vision" that drove it all, the primary motivation that got him in over his head.