My wife and I have been in the Arts for years,(retired opera singers) and have been surrounded by gay people our entire careers, so realize that they're perfectly normal people that just happen to fall into a different spectrum on the gender scale.
My wife has been a witness all her life (I'm not and have never been). She is totally non-homophobic, has nothing bad to say about the LGBT movement, is awake to much of the false doctrine of the Watchtower, and still can't shake some of the indoctrination she's received her entire life.
There are some couples in our congregation in which the husband, to all appearances, displays what one might call the "markers" of a gay male. I've actually heard sisters remark on this. They even come right out and say "of course he's gay!"). This is accepted because they fall into the category of "ones who have resisted their sexual urges". (In the cases of those with children, I'm inclined to believe they are bi-sexual or gender-neutral)
Anyway, my wife, due to her upbringing, and certain scriptures, still feels that homosexual acts are wrong, and that people in that situation should refrain from sex with others of the same sex. She agrees that it's unfair, but that's just the way it is. I have to say, she has never expressed this view in public, and treats our gay friends exactly like any others. We often go over and have drinks with the delightful lesbian couple next door.
So, what can we do if intelligent, kind people, still cling to these beliefs? Despite the recent election in the United States, that revealed we still have a long way to go, I do see a shift (particularly in the younger generation) that gives me hope that eventually people will accept that the Bible is wrong on this issue.
Till then, all we can do is keep pointing out to our children the fallacies of the Watchtower position, promote critical thinking, and let our children make informed decisions about this subject.