I'm not a Catholic but it seems to me that his public confession about his homosexuality is also a public statement that he supports present church doctrine.
I you are inclined towards homosexuality then you should not be ordained.
He's already ordained but celibate and wishes to continue in the priesthood.
His public confession means he agrees to follow church teaching.
Celibacy trumps sexual orientation, Hetero or Homo.
I think his honesty and sincerity should count for something.
There have been numerous discussions and articles about this. Homosexual priests have a way of saying "I'm celibate" and actually MEANING that "I'm not married". They don't necessarily mean "I am CHASTE" (ie no sex).
It's called "parsing" words.
I am a Catholic and have been quite angry about the sexual perversion among our priests. That being said, I agree with you. As long as he's celibate or chaste (depending on which side of the semantic argument one goes with), I have no problem with his inclinations.
The problem is he claimed to be gay, not just homosexual. Big difference.