I think you're dead on. I've worked in the musical theater and the dance music scene as a musician and I concur with your observations.
I also have been in classical music and a bit of opera and dance, so have been around the homosexual crowd. Despite their denials, it is a fact that they nearly always come from messed-up families, esp. from families with fathers that don't function well in their roles as fathers. Why in the world would someone be genetically disposed toward homosexuality? Doesn't make sense, and there is no evidence of it. Instead, it seems that boys get converted to homosexuality at an age too early for them to remember.