I have to shake my head in a mix of pity and frustration when I hear that people are prepared to damage their health for 'the startup scene', and not stand up to CEO's like that. One way to do it is, you band together. If you don't trust your colleagues to band together with, leave. However, I don't think I would have lasted even a week there.

I can understand blue collar workers in a depressed industrial town, but I can't understand elite tech workers tolerating that stuff. I think part of it is youth, and letting people boss you around without being a leader. Sometimes banishing people from your professional circle is called for. Taking a risk of losing a job by standing up for yourself is a powerful lesson to take away and you might be shocked how beneficial it can be to career growth.