Class A players don't work for controlling managers who overload them with near impossible targets. Class A players have plenty of options in tech, and have no need to tolerate having their skills called into question or disrespected by pointy-haired middle managers.

When Bill Coughran was asked how he was able to successfully manage so many famously high performers (engineers like Jeff Dean), Bill explained how that caliber of engineer tends to have strong opinions and you basically have to build a whole team around them and give them the freedom to do their thing.