Re: Did the fact there was hardly any real Nazis in this film hurt it?
The movie was a pretty light affair, so that may be why. It's a taboo. You still can't show swastikas in some country.
In the old comics, the Red Skull was essentially the embodiment of Nazi Germany. And they could have done that, but in a way, that does make him a boring character.
Still, the movie didn't really do much with its setting.