I'm not trying to turn this into the R&R Thread 2.0, but to instead seek solutions here. It would be great if we could achieve this kind of cease-fire in the quote above, though perhaps unrealistic.
There are two obstacles here.
1) Church has not ruled, so the dogmatic extremes of the two sides, dogmatic SVs and dogmatic R&R, they each hold that the other side is heretical.
2) Pride, ego, stubbornness, desire to be popes in their little ponds.
So if both sides could rally around a sedeimpoundist/sedeprivationist type of perspective, that could definitely bridge the gap for #1 ... except that #2 pervents some from even looking at it, much less seriously considering it.
I myself have been confused with a dogmatic SV for holding that some articulations of R&R are heretical. But I'm not a dogmatic SV, but a dogmatic indefectibilist. I believe that some flavor of R&R are nothing more than a thinly-veiled repackaged Old Catholicism, and that they absolutely gut Catholic ecclesiology and the Catholic papacy ... so those are intolerable.
But if someone has a theory without that particular implied principle, I have no problem with it at all. If someone wants to hold Montini and the others were replaced by doubles, more power to them. I might disagree, but I don't have any theological or doctrinal problem with it. After all, it's clear that they did replace Sister Lucy, and using doubles is in fact a known favorite Communist go-to tactic. And the Communists tend to reuse the same bag of tricks over and over again. There's actually some solid evidence that Montini was an active sodomite, and so blackmail is a possibility as well. So, as far as I'm concerned, go for it. Just don't try to tell me that the Church and the Papacy, guided as they are by the Holy Spirit, can corrupt the faith and the Church's public worship so badly that we are forced to break Communion with the Catholic hierarchy.