I’m a bit confused here. The overriding question seems to be if the priest is sinning in a particular way, can he still function as a priest, making the Eucharist valid? Or if you flip it, what would it take to make a priest’s celebration of the Eucharist invalid?
I’m hearing speculation on belief and moral conduct.
Why this particular moral conduct tho? Why focus on sexual conduct? Priests have had sexual partners, both male and female, for centuries. There are hundreds of children from those partners, which I understand dioceses are spending a whole lot of money these days raising. I don’t think that has much to do with a mass being valid.
And belief… well, I know of a clergy person (Christian) who fell in love with a clergy of a different faith tradition and got married. She quietly converted before she resigned her pulpit. There was some concern about her ministry being invalid after her conversion, and rightly so.
Has this priest changed his beliefs to another faith tradition? Is he now a Hindu? Has he renounced Christ in order to join a Buddhist monastery? No? Well, then, I believe he is still a Catholic priest who is able to perform valid Sacramental rites.
If you are upset about his being out as a gay man, well, that’s not unusual either. He has many fellow priests who are actively involved in gay movements.
Perhaps you could explain what really concerns you - his sexuality? His relationship with your organist? And if so, do you really want to know what goes on in their bedroom? Really?
If it is truly the validity of the sacraments he performs, then I wouldn’t worry. It’s not your concern. And if by any chance the Bishop says there was a question about the validity, he would probably have a blanket fix for all of the parishioners. It’s his job, not yours, to offer one.