[alexfrydl]

Okay, gotcha. So who are the two sides of this argument, and what are they arguing about exactly? I'm just trying to get clarification on who it is in particular that needs to stop “formulating needlessly metaphysical conceptions of gender” (i.e. making things up) and accept your biologically-grounded definition instead. Who are these strange, confusing people who even “educated” people can't understand?

[implements]

Essentially the two sides are arguing about:

The concept of sex as a social category should be replaced by gender. An individual’s gender arrises from a strong innate subjective feeling, and is presented by a socially recognised performance of masculinity or femininity.

Contrast with:

The concept of sex is a biological category linked to bodily role in the reproductive process. An individual’s gender is just what sex they are.