As I've said in another comment, I would guess that being pro or anti LGBT is strongly correlated to age. Old generations were told it's bad, young generations

As I've said in another comment, I would guess that being pro or anti LGBT is strongly correlated to age. Old generations were told it's bad, young generations are told it's good, and they vote accordingly -- only a few care enough to research it. It's hardly a good predictor for how good of a human being you are. Therefore, this will naturally cease to be a problem as the old generations die out, and we're already seeing signs of it. One would hope that we can thus move on and start discussing more interesting things (college republican/democrat debates, where you are automatically a monster if republican, I'm looking at you).