Hi Christyl, your article relates to one of my questions (it's in my article on moral psychology and moral nihilism). We can't deny that there's indeed something unsettling about being trans. It also feels unnatural to witness homosexual behaviours. I think this immediate aversion to them are natural.
But the (important) question is: should we pass moral judgements based on this aversion? Moral psychology seems to push us towards this direction: if it's unsettling for you, then it's immoral for you.
What you're suggesting at the end of the article thus seems unnatural to the moral psychologists. I don't think our attitudes will change anytime soon. Perhaps what needs changing is the institutions that justify these attitudes. If so, then we need address the question looming above moral psychology: does human psychology have a say in ethics?