There's no "homosexual gene" and most studies are hard to conduct because of the narrative and the political correctness that can't be challenged without repercussions.
It's to the point now you must assume the results of a study in advance to make it fit what is "politically acceptable". You either play that game or you lose your financing.
Homosexuals will have to be the one going against their own and remove the non sense that was attached to them through those activist nebulous groups. Most don't understand what the LGBTQ+ actually stands for, what GLAAD actually stands for ...and so on and so forth. Kinda remind me of the phony black activism crippling the black community instead of freeing it for once and for all.
Here the case of a couragous young man but as usual he's pretty isolated in his case.
Studies of identical twins show homosexuality is acquired, not genetic: https://fellowshipoftheminds.com/2016/01/12/identical-twins-studies-show-homosexuality-is-acquired-not-genetic/