I have it on good authority that 100% of the Catholic clergy are sinners. I've heard the percentage is high in other denominations as well. Do you know otherwise?
As for this being a uniquely "RC" problem, it isn't. Clergy pedophilia and illicit sexual involvement in general is a serious problem across the Christian spectrum, and outside of the Christian world, for that matter.
All of which sidesteps the point, which is this. Catholic teaching on this matter is crystal clear. All homosexual activity, indeed, all sexual activity outside of lawful marriage, is the grave matter of mortal sin. Period. We haven't changed one iota. And, in point of fact, although the entire Protestant world caved on the issue of contraception, beginning with the Anglicans in the 1930's, we haven't changed one iota on that, either. (The two issues are linked. Contraception and sodomy are both non-reproductive acts; sex for pleasure alone, no babies wanted. Even a former Archbishop of Canterbury said that the Anglicans undermined their objection to homosexual acts when they approved of contraception in 1930.)
The Presbyterians would be startled to hear your description of them as "not Reformed".
I would be interested to see the Catholic scripture basis for their position on contraception.