So, I think it's simple human nature to want to organize things and keep them as uncomplicated as possible. Unfortunately for our brains and organizational systems, human beings are not uncomplicated. In fact... we're super complicated. Our identities and ideas about who we are and what we desire are in constant flux. This is, in my opinion what makes being a human so phenomenal.

However, it means we do things like immediately (and always) assume to be female is to be woman (and by being a woman you must follow the gendered script of womanhood). But we all know we're more complicated than that. Our prescribed gender roles are not scientifically based. Our sex might be, but certianly not our gender. Its a mix of social and biological conditioning.

So, what we consider "normal" is also just as flux. I think a lot of people are startled by the conversations around trans people, but if we look back at history books there are texts describing trans people back thousands of years, and also in the 19th century in the US. But being trans has been relegated to the shadows and therefore seen as somehow diviant, aka "abnormal."

To respond to your questions... As a menstrual health researcher, and specifically in the menstrual health space I liked to use language like "people who menstruate." I know some people have problems with this, which I understand, but ultimately I find it to be the most inclusive language. In a way, this language does exactly what you say--it address the sex without saying a single thing about the gender!