Tl,dr: Musk is irratic and has no plan, per a journalist who has covered him for five years.
As far as I can remember, yes. I graduated with a degree in EE in 2015 and considered trying to apply at SpaceX, but after hearing some anecdotal stories of long ruthless work hours decided against it. I don’t think his companies are well known for a great work life balance nor workers feeling like much other than another cog in the machine. They still did some great work though.