I interviewed at SpaceX for a developer position about 2 years ago, and I didn't see any fear in peoples' eyes. The folks I interviewed with were down-to-earth, very friendly, and sharp.

They all said things like "you have to know what you're getting into here. Most of the developers work nearly 60 hours a week, with the exception of a few who are able to get through their work in less time." I decided not to pursue it further because I really value my time with my family.