I'm genuinely gobsmacked that anyone would take offence to a man dressing up as a woman. Genuinely.
You don't think it is offensive if a member of the oppressor class dresses up in the clothes that the oppressor class virtually forced the oppressed class to wear for thousands of years?
(The Bible already forbids crossdressing, and while that meant something different in Biblical times, patriarchies everywhere enforced strict rules on how women have to dress so men can tell who the humans and the subhumans are at one glance)
You seriously cannot see that there might be something wrong with that?
Not to mention the fact that men who dress up as women often imitate the mannerisms that patriarchy forces on women, and parody women's biological traits, such as high voices.
It's not the equivalent of someone dressing up as a Nazi. It would be the equivalent of a non-Jew dressing up as a Jew. I am sure plenty of the extras in Schindlers List who played Jews in the holocaust were actually not Jewish.
There's no dressing up required, because German Jews don't look any different from other Germans. You wouldn't even know whether to be offended without doing your research beforehand.
What is offensive is if non-Jews dress up as Jews outside of a movie and wear a yellow star, which is a symbol the nazis forced Jews to wear.