That's what happens when you force diversity. That means you force in people into things that have no business being there. Over time you encourage stupidity, incoherence, ineptitude and laziness.
If you make it so people are required to do things they are qualified for then they have no reason to try and be better. They can just be dumb and still get ahead.
Courts are no different. Why would you let someone that is just dumb as hell make decisions that effect other people's lives?