The promotion process at google self-selects for a very important skill: you are given a certain goal and you find the optimal way to achieve it, regardless of whether you agree with it or not.
This is a crucial skill for middle managers. Their role is often making sure their team executes on executive vision without questioning the vision (imagine how messy things would become if each middle manager would start questioning executive strategy and push back on projects).
At the end, Google process worked as they designed it for. People like you, who don't like to just do what they are told to do, choose to move on. And people who accept it get promoted and go on to become effective middle managers from a Google executive standpoint.
