If they are, then perhaps your question is wrong because you accept that homosexuals natural move to homosexuality.
Problem may be, that no one rally knows what is the true cause of homosexuality. Only people who whose conclusion is accepted on face value, without proof from "experts" who have no real proof. Instead, they have been good salespeople that have sold a narrative.
Like all sins, they tend to expand as moralities are rebuked & acceptance of the sin gains momentum.
Even I began accepting some of the excuses. I have come to the conclusion, that it's nothing more than evil taking a foothold within me. So, I have turned away from the narratives being pushed.
I do not hate these people, for I see them as victims that have justified their engagement with evil.
I pray for them, because I have seen many who have successfully left the homosexual life style
Many transgenders, regret their decisions to transition, and this mass killer even admitted he was one of them who regretted his decision. But who does he take his regret out on? Not those who guided him into that decision, instead he takes it out on those trying to stop this coercion upon their children's deaths. Adults are free to make their own decision on transitioning themselves.
Many face a lifetime of pain & regret for their decision. The narrative was a lie. They really couldn't change their true sex to the other sex.
How can you be sure that homosexuals aren’t groomed at an early age?
Easy answer they resist such actions it’s not a normal human trait.
The true cause of homosexuality is self selective.
Have a sit down with a shrink you will be enlightened.