There are witnesses who openly admit they are homosexual, but do not act on their feelings. I've heard brothers give talks saying they are attracted to the same sex, but don't act on it and it is a great weight on them and that is their great burden. I've heard others say it in private. It wasn't a big secret back in the day.
I know non-JW's that are obviously gay and don't wish to be and don't live a gay life-style. Live and let live. Who cares? People have to live the way they want to. There are gay men and women that wish they were not gay and they choose to not act on their feelings. That's their issue. If they want to live that way it's their choice. Who are we to criticize how others choose to live their life?