[bq])
> if the lab results are accurate that it's legitimately just fucked up wiring in their heads and not environmental[/bq]
Environment can fuck up the wiring in one's head. See: PTSD, troonism (when it's not confusing depression and other disease symptoms for "dysphoria"); cluster B disorders (a.k.a. failure to grow up) being massively over-represented in children of parents who also have them, too.
[bq]
> Sexuality isn't something kids should be thinking about. [/bq]
Until they reach puberty. And regardless, answer their questions honestly instead of bullshit about storks, or tell them you'll talk about it once they reach puberty and _*always_* deliver on your promises. [spoiler]||Yes, up to and including writing a book of answers for the kid in case you die before you can answer in person.[/spoiler]
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Like, all the "hurr durr babies are found in cabbage" does is tell the kid you're a liar and butter them up for predators who instead talk honestly and thus earn trust they don't deserve.