It just goes to prove the old addage - people are promoted to their own level of incompetence. Former fighter ace or not, he had no business running the Luftwaffe.
Post WWI/PreWWII Germany was run by psychotic, arrogant, greedy sicophants (sp?). Most who didn't fit that description were spineless. A few who were neither, Erwin Rommel for one, were rewarded for their success in combat and moral courage by being relieved of command. Or having it suggested to them they would be better off taking their own lives.