Yes, it is Jan.
However, on a model, I think historical accuracy should trump political correctness. After all, even a U-boat itself is an acknowledgement of the historical reality of what happened in WWII, so if you're going to admit that they built such machines, you might as well also admit who it was who built them.
It's not agrandizing the political system as much as it's representing the technical schievements of the time. And yes, also the artistic merit in some of the equipment, U-boats and Spitfires being two of the finest examples.