Re: Elon Musk The real reason
It's not the binding of his free speech.
It's the binding of his maximum stock ownership.
I assume he plans to buy Twitter outright eventually.
For an analysis of his SEC filings with appropriate sections highlighted see
https://www.theverge.com/2022/4/11/23020118/elon-musk-twitter-schedule-13d-social-media-board-of-directors-sec