I think we've hit one of those things where internet and real life are different.
Okay in the real world if someone goes "Wanna have sex?" and you go "No" you don't generally have to follow up with a 50 Slide Power Point Presentation outlining why. People don't have to justify themselves in the moment to anywhere near that degree and, to talk a deep breath of the real air people, someone look me in the eye where and tell me the number of cases of a someone being turned down for sex because they are transgender and that not being 100% completely obvious to everyone involved as the reason and doesn't need to be spelled out is anything but "statistically never."
If you don't want to have sex with someone you just say you don't want to have sex with them. If they demand an answer and don't drop it (how functionally in the real world that would even work aside) and they get an answer they don't like, that's on them.
I'm struggling to imagine a realistic scenario where this is the problem in the sense the OP is presenting it.
Okay. So the narrative is the woke college Tumblr transgender activist are... what? What exactly? Going to force us to have sex with them as if we are all literal genie and they can trap us in a "You say you're sexually attracted to women, I define as a woman, ergo you have to sleep with me" and then we have to go "Damn! I fell right into that one!"