Absolutely. Gender is ... Bollocks. Smoke and mirrors.
If a woman's wearing false nails, big hair, makeup, heels, bla bla bla, that's just a much drag as if a man's wearing it. It doesn't make / affirm that either is female. It's fake. Costume.
The limiting rigidity that says men/women like, wear, are, do, want, can, etc is artificial. It probably causes a lot of problems, including for ND and same sex attracted people.
It seems to be getting worse. I remember glam rock, disco, new romantics, punk, skinheads - boys in lace, makeup, long hair, glitter, girls with shaved heads, combats, doc martens. It's all just frocks.
But sex matters.
Women and men have physical experience unique to themselves. Health, reproduction, menstruation, medical needs.
Sport must remain sex specific for safety, fairness, and opportunity.
The male sex is statistically more likely to be a danger to the female sex and to children. Therefore sex segregated facilities are wise for safety.
And both sexes deserves dignity and privacy. I remember queueing for the mixed sex loos at a theatre and female volunteers were bellowing at men in the queue 'THE URINALS ARE OVER THERE' and several sheepish looking chaps trying to pretend they hadn't heard because they probably needed more than a wee and had now been embarrassed.
There are only two sexes. Differences in sex development exist and are probably more prevalent than we realise. XX and XY are too simplistic. But it's physical, not gender. Humans can't change sex.
I don't use the G word in conversation, unless I'm talking about grammar. So it's not gender neutral or all gender loos, changing rooms etc; it's mixed sex. Keep saying it. Shine a spotlight on it.
If Suffragettes were quite comfortable using the word then we can be.