“XXX and XXY? People may not be born ‘gay,’ but what of the developmental changes during puberty? Are they possibly born to become ‘gay’?”
There is no evidence that such sex-chromosome abnormalities are correlated with homosexuality.
No, but upchuck’s binary view of human sexuality is somewhat limiting. Sexual reproduction precedes humanity by a billion or more years. It is not a perfect process. It need only successfully produce enough reproducing pairs to continue the species. If it produces aberations that do not impact that success, they are tolerated, biologically.
Humanity is more than just biology, though. Culture is a huge part of our existence. Homosexuals can influence that realm greatly, for good or ill.
https://www.google.com/amp/s/amp.theatlantic.com/amp/article/480117/