A research study cited in an article, itself cited in FR a couple of days ago, had 90 percent of the gay priests studied involved in active sexual lives with an average of about 225 sexual partners per man (the range was a low of 10 to a high of over 500). The article said, I believe, that this one study was the only one which has been done so far. Now, one study can certainly be flawed, but the results certainly do not support your contention that the majority of gay priests are celibate.
I am sorry, but I doubt that I can track down the article on FR again. There have been too many recently to wade through.