You are dealing with a group of people who are pathologically hateful and full of rage. There is one unforgivable thing in their minds: to remind them that homosexuality is a perversion.
God has a way of reminding all of us that certain things are wrong. I believe our conscious is a reflection of "God writing His law on our hearts."
But for those who are so far gone, for those with a "seared conscious"--the ultimate villian in their eyes is someone who reminds them that there is right vs. wrong.
It's not really necessary; they find new ways to remind us all of that every day.