I haven't seen the musical, but have seen and enjoyed the original movie. I also get a kick out of Mel Brooks's "Hitler Rap," which he did at the time he did "To Be or Not To Be."
Here's the thing: It's a shot at memory of Hitler. Not only is he a villain and a monster. He's the butt of a joke. If he's in some afterlife where he's aware of what goes on the world that sort of insulting of his memory of him probably hurts him more than anything, other than the continued survival and success of the Jews.
Good points on mocking Hitler.
I'm still waiting however, for the biting ridicule and theatrical trashing of tyrants who killed even more than did Hitler, like Stalin, Mao, etc. just to name two?
Hello Hollywood? Broadway? Anybody listening?
Guess not.