[foldr]

The Catholic Church does not treat extramarital sex between a man and a woman who are infertile as morally equivalent to sex between two men. Nor does it treat the use of contraception as morally equivalent to gay sex, despite condemning both.

The Church specifically teaches that gay sex is wrong in a way that straight sex isn't, entirely independently of whether it occurs within or outside marriage.

In the case of the article we're commenting on, we have an example of the Church (or a closely associated organisation) specifically treating gay priests differently to straight priests, despite the fact that neither are permitted to have sex with anyone.

It's abundantly clear which group is being targeted here. It's not "people who are having sex with no possibility of having children", or "people who are having sex outside of marriage". It's gay people. And they're being targeted because the Catholic Church teaches very explicitly and specifically that gay sex is wrong.