I'm of the opinion that being queer is somewhat of an adaptation, even aiding in reproduction. Many queer people don't realize that they aren't cishet until many years after puberty. Science has focused on people that "always knew" that they were queer, often assuming that people who didn't aren't actually queer.

If anything, it makes way more sense for us to discover it later, if ever, as we can then pass on our genes when might not have otherwise. Lesbians and gay men often have kids, only to find out that they aren't straight and help raise the kids they might not have had if they knew earlier. It's not just kin selection that favors gay people.

Trans people also reproduce with cis people, as only a minority are exclusively heterosexual. Imagine a gay cis man, struggling with the expectations of needing to get with a woman, but always knowing he didn't want that. One day, l he finds someone assigned female by society, but who acts like a man in every way they can. This person would interact like one of the boys, as he thinks like a cis man on a neurological level. The gay dude was never interested in "females," but he falls for this person because they aren't really a woman beyond reproduction. He shacks up with the trans dude ofc, passing on his genes directly instead of through his kin.

Even straight trans people do T4T, so there really isn't anyone who can't directly pass on their genes unless there's something else causing infertility. Queer people don't need straight people to make more of us. Heteronormative assumptions from straight people that don't talk to us has prevented evolutionary biologists from understanding the true picture. They can't understand why we exist so they deny that we do. So dumb 🙄