You dipshits get super holy when you just don't like someone and suddenly all of life becomes so black and white. So you're looking for any excuse to be a dick in a situation that is none of your business. I'll bet you overlooked a thousand examples of random CEOs doing things that aren't exactly and provably in the interest of their shareholders before this.

A rational person could argue that the health of twitter is relevant to the health of Elon who will do a better job as Tesla CEO if twitter does well.