I ran into a situation where a manager with poor technical skills was promoted primarily because some hiring boxes needed to be checked. Then several of my peer

I ran into a situation where a manager with poor technical skills was promoted primarily because some hiring boxes needed to be checked. Then several of my peers began leaving the unit this manager was heading up. This went on for years until I was transferred into the problem unit. After I witnessed a couple instances of incompetence, I decided to sound the alarm in a meeting with her supervisor. In short, it came down to the supervisor stating that they had invested too much in this manager to change anything, although the turnover costs were mounting. I went into the meeting with all the intention of pointing out the problems and correcting them, but having faced the sheer stupidity from on high, I realized the futility of fighting, and resigned. If the management doesn't care that this problem is hurting the team, how is one member of the team going to change it?