But some men are more feminine and some women are more masculine. It isn’t dichotomous, as you seem to imply here. Effect sizes are consistently less than 1.
Explain how I have 99th percentile spatial skills. It would disadvantage me if people started judging my brain based on my gender.
I also performed poorly at an all girls high school relative to how I performed at a coed middle school and in college. It was very bad for me to go to a school with weak math and science programs, where we were limited re how many classes and APs we could take, and competition was discouraged. Computer science wasn’t offered and BC calc was taught in 2 years instead of one.
So in my experience, when I’m treated differently based on my so called female brain, it’s a big problem for me.