Think about all the times you've used public washrooms. Now ask yourself how many times someone in a public washroom has openly waved their genitals at you? Not very often, I'm guessing? Now out of the probably minuscule number of people who have waved their genitals at you, how many have been trans folks?
Anectdata here, but I can unequivocally state that I have never ever had a trans woman wave her genitals at me in a public washroom. Although I can't back it up, I'm fairly confident, however that I have at some point in time shared a public washroom with a trans woman without even knowing it, my ignorance of such events likely being a result of the distinct LACK of genital waving in public washrooms.
Which is why i don't get what the big fucking deal is with letting trans people use the washroom that corresponds with their identity. Arizona, can you answer this for me?
If you accept the premise that trans women are women, full stop, you accept that there is no greater threat allowing trans women to use women's facilities. The presence of differing genitalia shouldn't enter into it. I mean, when was the last time someone told you to drop trou or present your birth certificate before allowing you to go pee?
The problem is that a lot of people don't accept this premise, which sucks, because it's really not that difficult to wrap your head around. What makes a woman a woman? Not boobs. I know dudes with nicer boobs than mine. We still accept that the profoundly flat-chested and breast cancer survivors still identify as women. Not a uterus, since I'm sure post-hysterectomy patients still define themselves as women. It's an innate sense of being a woman. It just so happens that some of the people with this sense of womanhood happen to have penises, or have had one at some point.
So instead of freaking out about the possible genitals of whomever you may be asking for an extra square of toilet paper, maybe just figure if you're in the ladies, and their in the ladies, chances are it's a lady. Then worry a little more about what's going on in your own stall.