First of all, there is no gay gene so far. They're been looking for it for decades and nothing was found, not even in a recent gigantic genetic study (500k people).
The problem is that **you can not prove a negative**. They will always cling to the possibility of such a gene existing and you CAN'T contradict them.
However, even if tomorrow they find the "gay genes", it still means nothing in regards to LGBT not being a disorder.
You have genetic heart problems, genetic liver problems, genetic kidney problems and i could go on and on. If such a genetic disorder affects a person we don't say "well, he was BORN THIS WAY", so let's leave it like that, it's normal. We acknowledge it's a disorder and we try our best to fix it.
Every time you engage with some degenerate in the "homos are genetic - no they're not", you're only enabling and empowering their position while crashing yours. The only answer, which you should repeat ad nauseam, is that **we have thousands of disorders and we don't let them be because they are genetic, we fix them**.
The topic is about NOT discussing anything about this because even if it was genetic we still recoginze that there are genetic disorders and we treat them as disorders.
Just because something is genetic does not mean you leave it as is