I was raised catholic but left church, but I like to answer.
No. Why? Because I don't believe that someone who lives celibate can be a good priest, which is one of the reasons I left the catholic church.
Celibacy was invented to prevent priests from bequeathing their money to wife & children so that the chruch should have it.
Celibacy has nothing to do with the teachings of Jesus, I believe that Jesus himself was married (he was a Jewish Rabbi after all).
On the other hand I see no reason why a homosexual man should not become a catholic priest - or a homosexual woman, but this is another matter.
I wanted to be a priest years ago when I was celibate. After going to Mass for years before confirmed, I learned why celibacy is important regardless its history. To me, if I were priest, be celibate is fasting from flesh desires that not all people feel the need to express in any romantic relationship. To me, it would be giving up what I do with my body and focusing it on how I use my body to devote myself to Christ. To me, being celibate not a big deal when comparing it to being devoted to Christ. If anything, I would find it selfish to have sex outside of marriage when celibacy, to me, would be helping prevent temptation to have sex until I was married. As a priest, I wouldn't find marriage part of my devotion because in a Catholic view, my devotion would be to the congregation. I would be married to the body of Christ. Being married to a man or woman is a different sacrament and I would find that no interest in that if I choose that between being married to the body of Christ.
As for the second part, I see no reason either. My question was, say if I were to be a priest, why would the Church say I can't identify as homosexual even though I did nothing to hint that I am (according to the Church)?