They obviously have mental and/or emotional issues that make them want to shock straights and proclaim victimhood. If they were really about sex and not their personal liberal/socialist agendas, they would STFU and do their thing without the need to broadcast it. Hell, I don't want to hear about what my straight neighbors do in bed. That's their business, not mine.
They do this because they know they are not normal, and they desperately want society’s approval to prove to themselves that they are.