People hate this on here but to me you would be who you say you are. It's not for me to tell other people their identity and it's not my business either.
Absolutely no issue at all with people wanting to be who they say they are, sorry if that blows a hole in your prejudices.
I have absolutely no problem with men identifying as women or fae or furries or anything else, I hope they have a lovely time, and I'm all for gender neutral additional spaces to let them express in peace. I absolutely believe in live and let live and self expression. AND I believe in single sex spaces for women on the basis of uncomplicated biology which cover 99.9% of the half of the female population, because those are needed for access and inclusion in our diverse world.
The two things can exist alongside each other. Unless of course your actual value under all the nice sounding stuff is actually that men should dominate women, and women's birthright is just to submit and obey. Which is interesting because it would suggest you don't think 'identity' in any way affects the reality of actual binary sex, and believe in sexism on the basis of it.
A man identifying as a demi femme boi elf is yes, none of my business and I'm not really very interested. If however he is going to invade women's single sex spaces and start affecting every woman there, his behaviour becomes very much my business and my interest at that point in his inner sense of his identity is absolutely zero because it's irrelevant. Not least because he's acting against women's legal protections and rights in law that exist precisely in order to prevent men behaving this badly towards women.