In short: If you are successful, you are remarkable!!! and I agree with vaksel completely: it sounds like a slave driven environment.
Some people are slaves by force, others by addiction, others by ambition. Some people thrive under that sort of pressure, others break down. I'm not sure where I'd stand.
Also, there does tend to be a huge survivor bias in talking about startups. I suppose it's much easier to talk about the few successes than the many many failures.