Me, too. I think the problem is that they picked up on the notion that gender is an important issue and that there appears to be a lot of research on the subject, then ignored said research and went ahead and published their own stereotyped views of what gender is all about, reinforcing them in the process, it's a mess. The teachers who teach this pick up on this notion, the notion that research on this is trivial, anyway, and go with what their gut tells them is right about gender ("Women like shoes", an English learning poster done by our Abi-Jahrgang said, "Men like Sports". It got 15 points - the highest mark and left me feeling quite sick).

My only hope is that this stereotype reinforcing backlash ebbs off, soon, because all this very strong stereotyping seems to be rooted in panic for some.

How things looked between your legs did not constitute so much.
I get what you're saying, but that's a person's sex and another problem - German doesn't distinguish between sex and gender, even though that's two entirely different things, so many people, including text book authors, mix those up - in short, your sex is what people determined your genitalia make you, and gender is your social role, "what's in your head". Those two aren't connected and need to be treated differently, but most books fail catastrophically at that. X_x