I would argue LGBTQ stuff is being shoved into the mainstream because trying to fit in didn't work for them. If we just granted gay people gay marriage when they asked politely for it then they wouldn't have needed to build such an in-your-face political movement. We can see this in early documents during the gay equality movement and the AIDS crisis. There were gay people trying to say "we're just like you, but gay, please help us, we're dying", and nothing got done about the mass death and suffering until they started protesting en-masse and throwing the ashes of their community members on white house grounds.

Obviously, if an entire community needed to be loud to survive, that community is going to retain its loudness into the next generation. The "original sin" as it were was ignoring their suffering in the first place.