Seeing as though this is what has caused Musk to go even further off the deep end, banning journalists, causing more people to leave Twitter, and getting more unwelcome attention from regulators, I'd say it's directly related to him needing to spend even more time on Twitter and away from Tesla and SpaceX.

He could have opted to be more hands off, appointing a competent manager to run the place while he focused elsewhere. But he's chosen the opposite.