I'm surprised that there has been some public backlash about this. As an LDS person, maybe I'm biased. However, this only seems like a well-intended message suggesting mutual respect and fair treatment for all.
"We reject persecution and retaliation of any kind, including persecution based on race, ethnicity, religious belief, economic circumstances or differences in gender or sexual orientation.”
I realize this isn't a perfect situation, regardless of your personal views or choices. However, opening up discussion and taking steps towards a better relationship seems like movement in the right direction if you ask me.
Let's not forget that there are people in this world that feel this way (see below):