Been thinking about this a little while... And just thinking out loud really....
I feel like some of the confusion around gender/sex could be solved by introducing the concept of legal gender.
GRC = an appendix on your birth cert with states you have changed you gender. Your birth cert stays the same (as it has happened, it's in the past. You were born your bio sex and that's important to have recorded and never going to change)
Then on passports etc you have your bio sex and a little gender box too.
Same on your medical records. Then you still get your automatic smear test letters and breast screening apts (if appropriate). Your blood / urine tests are tested using the correct parameters. But you have a little box which alerts medical professionals that you want to be referred to as a man/women. Your letters will be addressed this way but medical info will be taylored for your correct sex.
Holistically your gender can be man/women whatever you want but legally and medically you're still your bio sex.
Obvs won't help the cult like spread of the ideology, misinformation & rush to medicialise children but wouldn't it help iron out some if the confusion? Help to separate sex and gender.
Same sex attracted - stays the same.
Sex based rights - stays the same.
No such thing as 'legal sex' to confused idiots people.
People could even choose not to have gender, just use their sex for things.....
What do you think?