I don't understand why people tolerate that kind of treatment. Never in a million years would I work nights or weekends or allow anyone to scream in my face. That's just not life.
My manager and some on my team at Apple generally discouraged me from working on weekends - I’ve worked some on weekends mainly to de-risk accomplishing certain tasks due to me being in an optimal state to tackle some issues & having some spare time. Occasionally I have to fix operations issues on weekends too, but those get resolved generally pretty quickly.
All in all it’s a YMMV situation. Most people in my org keep to normal hours, have same development timelines, and are pretty happy (no yelling/screaming, most operate somewhere in the 10-4 time range give or take, 5 days a week).
On the other hand, I've never built a product from scratch so quickly. Google and Facebook didn't exist when I started my current job. Now they're gazillion-dollar companies. I've had projects on my wish list longer than Aperture was a product.