He might if he wants their options not to vest. [Edit: Or to have to pay their golden parachute.]
I wonder how many his employees in Tesla/SpaceX/where ever are currently incentivised by stock options, who’d watch their boss doing that to Twitter people and wonder why they bother working evenings and weekends, if the options can be yanked as cruelly as that?
Also, because of being outmaneuvered, he may be seeking any chance to stick his finger in the eye of the people who did it. That the logical consequences will be that his finger gets cut off... well, as I said, I'm not sold on his foresight at the moment.