What's the unnatural element in someone having gender dysphoria? Transitions are not natural but being trans is natural.
Also, the discussion on where lines can be drawn in terms of attraction is one that I also struggle with. Usually what leaves me un-attracted to trans women is the uncanny valley of realizing they look like a woman but I can see the "man" underneath. It's a stigma and a hangup that I find difficult to get over. But even if I can state that a trans woman is beautiful, like with a lot of Asian models that have tons of makeup and work done and look gorgeous, the hangup still exists.
Some people say it's bigoted, I feel like you can't force someone to be attracted to non-cis people. Even with race attraction is complicated. I'm down for any skin tone but some people have hangups. And while it may be possible to train yourself out of that bias, is it really racist if you fetishize porcelain skin? It's not misogynist to be gay, but that's an oversimplification.