I don't necessarily disagree with you, but remember that this person was in a position of power in the company as the product manager leading a major effort. She sets the bar for work, and was glorifying sleeping at her desk and working insane hours to push Elon's "vision" out the door. You gotta imagine her underlings were required or pressured to do the same, and got fucked for it.
I agree with your vision of the work environment. However, both the product manager and her underlyings should all have some type of emergency fund that would allow them to risk being laid off for not spending their lives at work. I know it's easier said than done, especially when some emotional attachment and loyalty exists.
My comment was more related to how bad an idea unions are under the Wagner Act rather than anything concrete to these employees' experiences.