This sounds exactly like the main point of many Dilbert comics and books (a dozen or so of which I own). Scott Adams explains it as nature's way of moving incompetent people out of the way of the competent people. Having an incompetent person on your team is most likely way more obstructive than having an incompetent manager.
I'm not sure that's the point of Dilbert, although it is a recurring joke. PHB causes way more misery and obstruction than Wally. Your manager can steer your whole team/organization onto the rocks.
