This is a common misconception.
House music is an off shoot of disco, the same way trap is an off shoot of hip-hop.
The gays were present because they went where the best music was because they wanted to dance.
Some of the influential DJs were gay. That's it.
The LGBT, specifically the white LGBT, have co-opted dance music and have pushed the false narrative that it's gay music created by gay people, which is bullshyt.
It's just more Columbusing of Black culture. Flat out.
Creation was the wrong word. You're correct. I should have say "proliferated."