Yep. People differ from each other, and one common way is along gender lines. Doesn't mean everyone of a particular gender is the same. ..but, if there weren't differences, there would be no need for identifying with one, or the other, or both, or neither.
No but we are getting to the point where solutions to problems are one size fit all. And healthy things in one gender must be a good solution for the other gender and that's not thr case.
True for gender sometimes, and true just for people in general most of the time. Generalization, whether about gender or gender-neutrality, or an any other area, can be useful when right, and harmful when wrong. Like any tool, forcible application is likely to break either the tool or what one applies it to.