The leftist propaganda ruins the comedy for me ... Even Tom Lehrer is stained and damaged by it. I recognize and reject attempts by those with evil agendas to manipulate my mind. When the Leftists have you laughing at their jokes, you're halfway to agreeing with them.
I'm suspicious of even propaganda that promotes a point of view I agree with. That Donald Duck cartoon is brilliant, and there were a lot of things about the Third Reich that were ridiculous. Disney was right to ridicule them. Still, the Third Reich, taken as a whole, was not ridiculous. It was demonic. There was a time to laugh, and a time to drop bombs.
When it comes to wartime cartoons....I kinda like
"Bugs Bunny Nips the Nips"
Actually I have the old Frank Capra
"Why We Fight" series that was made in early 1942. Still moving and impressive.