Comment by feyman_r

The chances of your having a manager of Indian descent are higher in tech compared to other professions. That's a function of the 'ingestion pipeline' that's built through the US education system (H1B through higher-education). In a high-expectations field (tech), coupled with a high-expectation company (Amazon), folks who manage to stay back, tend to be seen more, and will be rewarded by being managers (till Peter Principle kicks in). Most middle managers in exacting teams (for products like AWS) are likely to be demanding.

My hypothesis is that a part of what you're observing is just some form of 'survivorship bias' - changing jobs with visas isn't easy (been there done that) so folks are more willing to 'bend' to the culture being driven internally than just moving out (esp. with the long wait times).

At some point, its hard to distinguish the people from the culture, and what came first, but that's a different conversation.