They're the ones that quit when you tell them they have to go hardcore or take a severance package.
(And my feeling is that a lot of the Elon-hate comes from people who fear that the outcome will be more in line with my expectations than yours.)
Most people don’t bank on all the “dead weight” being able to jump ship and find a new job. Musk also hasn’t outlined what his actual vision is so you’d be signing up for “hardcore” work without knowing if you agree with the goal