The answer is simple, they're lying. I'm not going to guess at their motives for doing so because I don't need to know them to know that what they claim is ridiculous.
In my group of friends from highschool, there was one guy who came out as bi. 3 years later he came out as trans. A month after that he attempted to throw himself at me, because now that he's a girl, we can go out. He attempted to kiss me while grabbing for my dick, because he's a fucked up autist. I cut all ties with that guy.
Fast forward several years, I'm catching up with my other highschool friends. A story gets told of how the tranny pulled a knife on someone he was going out with. Apparently he felt threatened so he pulled out a butterfly knife for self defense. Well that's oddly aggressive, we didn't remember this guy being anything like that in person. So the conversation turns to everyone's experiences with him post highschool. Turns out this "true and honest woman", had sexually harassed, verbally or physically, 3 other guys in our group. He really liked to talk about the one guys penis in extensive detail, details he got from the guys ex girlfriend. Talking about its size, shape, and curve. Talking about how much he wants to see it. Touch it. Suck on it. Just being a fucking creep, but oh no, he's harmless, it's just a bit right? He's just like everyone's gay best friend. He only stopped after he groped another guy who kicked his ass.
Most of us don't think about that guy anymore, but last I heard, he's still living at home when he's almost 30, flipped to being a transbian who talks about their "girldick", and all he's done is get some tittyskittles and grew his hair out. This is a person who goes into women's bathrooms.
That's one tranny in a group of 7 men, with 4 stories of creepy tranny behavior towards them. Now imagine you are in a group with dozens of women, all with their own friend circles, and all with their own stories, who tend to have more than one tranny in their life somehow. Women who live in actual cities where the trannys are, and not just random towns. Women who can't just beat up the creepy tranny when he steps out of line. Trannies, like the pedophiles, typically aren't one time only offenders.