The other side is right about the corpses, and that's exactly why the wording matters. Imagine a town reviewing a wildfire that leveled every street and saying the fire "wasn't a good neighbor." True, but absurdly small. "Not a good person" is the language of ordinary flaws: rude, selfish, unreliable. Hitler's deeds are past that scale; the honest verdict is monstrous, not merely not good. I'm not polishing his reputation. I'm saying the proposition is too weak to carry what the other side has proved. Their facts are strong; their label shrinks them.