I believe there's a difference between gender and sex, as most do. I believe gender can be fluid and socially constructed, but that sex isn't and is quite static.
There's provinces in this country where you can get the sex designation on your birth certificate changed from male to female and vice versa, which is categorically insane. There's provinces in this country where you can get an official sex change certificate after surgery because somehow some people think that by cutting off your
**** etc. that then makes your sex female, which is categorically insane.
Let's support people expressing themselves however they want, but let's not enable delusion based on wishful thinking.