You're so focused on the time people leave the office, I can't tell if you're arguing that 50 hour weeks at Google is abnormal.
That answer was upvoted by multiple Google employees/former employees.
>Look, at the end of the day it's about getting shit done and COMMITTING CODE.
Are you suggesting that working long hours equals more and better results? There's a stack of research to contradict you if that's your position.