I personally know several people from amazon, pretty much all of them acknowledged the crazy oncall expectations there. Combine that with the pip culture and visa issues, and your statement above about being "no more stressed than anyone else" is just ridiculous
Expecting people to work at 1AM, romanticizing them as "heroes"... that's not a normal culture. That's not a healthy lifestyle for the employee and can lead to long term health consequences. And it never applies to everyone equally, because why would you call them "heroes" in the first place
It's one thing if management expects it, it's another thing if I as an employee choose to trade 4 daytime hours for 4 nighttime hours because I know I can be more productive at that time. But building that type of management expectation into a work culture is a red flag