The other LLMs don't have a "disbelieve reputable sources" unsafety prompt added at the owner's instructions.
Tbf, it must be difficult for LLMs to align all the WWII propaganda that's still floating around.
Given the source of training data is primarily the internet, and not say scanned propaganda posters in museums, I'd have to imagine all the analyses or things attributed to the impact of world war 2 significantly outnumber uncritical publications of ww2 propaganda in the training sets.