This isn’t the gotcha you think it is. The stance of serious Christian theologians on homosexuality is nothing like the WBC stance.
Homosexuality in the Christian theological tradition is essentially seen as a disability. Premarital sex is equally forbidden to everyone. But because of what the Bible says, homosexuals have no access the holy mystery of marriage. Therefore they must remain chaste.
As for transgender individuals, the stances of some large churches might surprise you. The Serbian Orthodox Church for instance accepts transgender individuals.
I’m not religious and these aren’t my personal views. Just saying that it’s a bit more complicated than “god hates f*gs.”