You keep drawing a distinction between “priests” (whom you believe deserve the blame) and “homosexuals” (whom you believe the Church is instead blaming). I think the fairest characterization of the “pro linkage” RCC position is that “homosexual priests” were the problem (or a part of the problem) – that they are blaming the individuals in question. As it’s not disputed that many men who fell into the Venn diagram category of being both homosexuals and priests were behind much of the abuse, I still question your use of the word “scapegoat,” which my dictionary tells me is “one that is made to bear the guilt of others.” If the RCC is indicting “homosexual priests” for homosexual abuse of kids, that seems not to fit the bill of scapegoating.
Catholics who believe in a linkage might conclude that the ratio of [homosexuals who can’t keep it in their pants, and should be condemned for that] to [heterosexuals who can’t keep it in their pants, and should be condemned for that] was kind of high. So concluding would not of course absolve or change the guilt of either set of people or conclusively answer the question of why the ratio was high.
I can agree with you that it “could have something to do” with it, yes. But you have not established that availability, or any other factor(s) having no relation to homosexual orientation, has everything to do with it. Without such a showing, which your OP essentially takes as established, talk of “scapegoating” or intentional “strategies” by the RC inevitably involves a degree of question-begging.
I think you are thoroughly convinced that no sane person could believe that the homosexuality of some priests was what impelled them to abuse. That is a viewpoint, and not a crazy or worthless one. The problem is that you assume that the contrary viewpoint could not ever be sincerely held by any sane person, so you search for other motives (scapegoating, “strategy”) for why someone would say this for tactical reasons. Sometimes people really, really believe what they say. The proponents of the gold standard were not engaged in a subtle strategy to scapegoat paper money. They really just thought a gold-based economy made sense.