The preference part isnt transphobic. It's that part where they all think that trans men and women arent real men and women. And besides it's not a real sexuality so either way they re in the wrong. A person may not want to date a trans person out of private preferences and that's fine but they shouldnt make a entire sexuality out of it because this sexuality isn't valid for two reasons. 1. It's not a sexuality in the lgbtq+. 2. A sexuality cant be valid if its dividing another orientation.