What I find really interesting about this is that race (and to a lesser extent disability) really IS an arbitrary social construct without clear boundaries and objective definitions, unlike sex.
From a biological perspective, race literally doesn't even exist. It's a random set of traits we picked to draw lines between people and call THEM less human than US, when we could as easily have picked height or blood group instead of skin colour.
Disability is relative to the societal context. I am not considered disabled because I have glasses and I can see perfectly fine with them. 1000 years ago before they were invented my poor vision would have been a terribly limiting disability that made it damn near impossible to fully participate in life. Now it's a complete non-issue. It's likely that in the future many current disabilities will be seen as non-issues in the same way.
Sex is clearly and objectively defined, and affects us now in exactly the same way it did throughout human history (i.e. males inseminate, females gestate).
So how come the one thing it's OK to 'identify' out of is the trait that's the most objectively defined and immutable?
@Ireneony
Thanks for your experience. To there's a huge chasm between identifying WITH and identifying AS. E.g. some people identify WITH native american cultures, and while misuse of dream catchers and feather might be irksome it's not nearly so bad as identifying AS native american if you are not.
I would fully support TIMs identifying WITH womanhood and femininity instead of identifying AS women.