My surmise differs somewhat. Clerical/priestly life was, before the abuses became evident, the best and most honored  profession within Catholic communities. So I surmise that many heard that call as from God. If one was aware of gay desires, priesthood would be even more attractive because it embedded one on a community of committed men. I doubt if any gay person ever entered seminary with the prospect of abusing boys somewhere down the road. Which is why the percentages far outstripped the low percentage of gays in the population: one could just avoid temptation and count on supernatural grace. During seminary days that worked for the most part. But when stuck in lonely parishes with perhaps less congenial pastors and curates, priests began to look elsewhere. Gays to boys or men, straights to women. Nevertheless, the church does itself a disservice to pretend gays are few and identifiable, doubling down on its refusal to acknowledge sexuality as quite human for everybody. Pax.