Because sex is a biological fact. Women have always been oppressed, too many people confuse sex with gender. However much someone may feel they are in the wrong body all the surgery in the world does not change your biological sex. Self ID has opened doorways for predatory men to target women.
I’ve become engaged on twitter via an anonymous account.
I have not really engaged as much as I would like yet. I have been blocked unknowingly by other people on twitter I assume because of tweets I like or have retweeted.
Ruby2shoes, Woman in her 40’s sick of being labelled CIS, menstruator and other demeaning terms
The Gender Dissidents Survey 