How is disgust or aversion to bodily anatomy not valid? Plenty of people think being fat is gross and there's nothing wrong with that.

That's not allowed anymore either. You are forced to be attracted to everyone physically and ideally, and if you are not, you're a bigot. Sexual preferences are fine as long as it's limited to specific criteria. It's OK to say you're not attracted to x, but then it's suddenly not OK to say you're not attracted to Y. It's funny how people say 'gender is a construct' as if they know more, while that exact notion that gender is a construct, is also a construct. It all relates to our cultural upbringing, no matter what side of the fence you're on. Some people just think they know the absolute truth.