This sounds like obvious sealioning but I've got a minute so I'll take the bait. If everyone applies that mentality it will almost always lead to the tyranny of the majority. What will cause a group that has even a slim majority to understand and take into account the needs of the minority. How will the majority even know there is a problem if the minority doesn't (as you say) "complain to everyone else". Just like the poster depicted says "so what" about it being gay being a choice, I don't care whether people define that stance as "homophobia". I do care that they understand why they shouldn't do it.