Some aspects of gender expression are social constructs, but certainly hard-coded gender identity is real. This is a spectrum, and there are many people who do

Some aspects of gender expression are social constructs, but certainly hard-coded gender identity is real. This is a spectrum, and there are many people who don't identify as either gender, but somewhere between. You don't have to be a TERF to say that something as vague as "science ability" can't possibly be measurably linked to sex or gender. (one of my children is transmasculine, but he also likes to paint his nails and wear glitter. we refuse to assign him any sort of gender expression box, and still respect that he is a boy).