Hitler was fucking wrong about a lot of things. He lost the war, which demonstrates that he wasn't right about everything. His leadership lead to the largest slaughter of Germans in world history. He adopted the Nazi movement, he co-opted it. He became the face of it, and ultimately, that worked against the German people. Even if he had the right enemies, his errors exceeded his accuracy. The world of his victory likely would have been no better than Stalin's empire. I am not sure that there was going to be any good outcome from WW2, no matter who won.