Forget historical accuracy. Politically correct activists must be appeased. I’ve noticed over the years that on the box covers of model kits of German warplanes of WW2 that the swastikas on the tails of the planes were replaced by black crosses like those on the fuselages. Probably the same for n the actual kits.
I’ve been a modeler for years and I know what you’re talking about. They won’t show anything on the tail of any WW2 German plane but almost all the kits include the swastika. if not then you have to go to a dealer and order a decal sheet. Stupid if you ask me.