Because all the conversation I’ve seen has been against Trans Women going to women’s restrooms. Which is strange to me because, according to the twisted concept of TERFs, Trans men are not men (even though they are), but “women”.
Aren’t they worried about “women” going into men’s bathrooms?
They also care about ruining trans people’s lives in any way possible. I’m sure there are plenty of transphobes who simply haven’t thought the bathroom thing through, but don’t forget the other reason they’d be happy to put passing trans men in women’s bathrooms: it forces them into an impossible decision. When an angry mob drags a trans man out of the women’s toilet, you think they’re going to listen to protestations of being AFAB? If anything, that’d just rile them up further. So a when someone is faced with the decision of choosing either the room they’re least likely to be noticed in, or the one the law technically assigned to them, they may instead choose to stay home. They may even start considering detransitioning. This is a feature, not a bug.