Yea I'd agree the ideal is to get rid of sucky managers before they can crush too many people's careers. Microsoft isn't so good at actively firing bad people though, and that probably compounds the injustices of the stack rank system.

I think someone here quoted Bezos: "If you have a bad manager, then quit." Companies can only detect bad managers when their direct reports leave.

It's deeper than that. What matters in management ranks is subservience. A bad manager is someone who is not subservient or exhibits individualistic behavior. Direct reports leaving has no bearing on this at all, so it doesn't matter. in fact companies predict how long rank and file employees will stay on average for a number of reasons such as estimating recruiting expenses. I think what Bezos meant was that rank and file are not of the power structure, would never be able to influence the power structure, and are expected to leave after a time. The power structure would be protected at all costs even if every last non-administrative employee was driven out.

Realy I know a team member at a previous employer who where grateful lthat thier team had two peopel with terminal cancer so they ehere given the crap position on the stack rank to hit the teams quota for poor performers