This is a man who has raped women and girls himself, I'd say.
And he is literally covering his ass - on both ends. If he truly believes that sex and rape are not that different and this is how sex works, then allowing men to have sex with other men could put him at risk of exactly that same treatment - and I doubt his ass would like that. Meanwhile, he aint about to give up his own entitlement.
I don't doubt his beliefs on gayness being evil stems from his christian roots, but it is funny how the rules about not harming other people and only having sex for procreation within the sanctity of marriage didn't stick with him, and aren't that big a deal to him. I'd say he is either consciously or subconsciously very much in the ass(ets)-protecting business.
I'd laugh at the irony of having such a man as your minister of Ethics if the situation wasn't so **** gruesome.