Suppose if my Bellevue flatmate was from Amazon , would he have told me about this?

I tried to move internally in Amazon Bellevue. I wanted to move to a managerial role. I spent 5 years at Amazon in another country.

However, my next hiring manager (new to Amazon) told that he would collect feedback from current manager and I thought that he will only ask if I was on some focus plan (which makes me ineligible to switch). But my current manager gave negative feedback and the hiring manager decided not to take me. After all this, my current manager decided to FOCUS me due to ‘poor performance'(in his words).

Later I came to know that every manager has a fixed firing quota/stack ranking and they generally fire employees who are unable to hide their plan about switching team. Nobody shared these hidden processes with me.

Also, staying with a flatmate from Amazon would have helped? would he have told me about this?