Earlier quoted context omitted.
I work at a company like this. In fact, I need permission from my manager's manager's manager in order to stay past 7pm. This company believes in a strong work-life balance, and this is one of the ways it achieves this. Also, it "changes the world" in good ways, not by "connecting people" through bogus data siphoning addiction traps.
If you did, do you get fired? Genuinely curious: what happens? Personally I strongly prefer no fixed working hours. If you want to work at night, so that you can do things when it’s light out (especially in winter), and you still get the expected results, what’s wrong with that?
Also, lone wolves working at night are harder to manage and communicate with.