How many malicious employees do you think would be left at this point? There have been massive layoffs, and anyone who didn't like Musk or the "extreme hardcore" could have taken the severance.
If they aren't held hostage by a H-1B visa.
If an employee couldn't afford to leave before — for whatever reason! — then they can't magically afford to leave today either.
This is just a probability you may have a different weight on.