There's nothing wrong with wanting balls in your mouth, but there's a lot wrong with wanting Hitler's lonesome ball in your mouth, because Hitler was a genocidal fascist dictator. I'm sorry, but your point that we shouldn't judge Nazis for wanting to gargle Hitler's unitary ball is harmful and displays an alarming complicity with fascism. It's not okay to fuck Nazis.
To paraphrase an old German joke, what do you call ten men gangbanging Goebbels? That's right, eleven Nazis.