I really don’t want to come across as a Musk apologist, but blasts like this from a ceo can be effective and making a difference. Imagine you’re an engineer who wants to produce a great piece of machinery to tight tolerances, but your boss is yelling at you to meet deadlines. Now you have something to point to when they’re saying to cut quality. The organization needs to be able to handle this kind of pushback, but it can work.