What I have determined is that too many of us have let Ratzinger off the hook. We loved him. We had illusions of who he was and of course, his Reform of the Reform and then Summorum Pontificum endeared us to him. He seemed to sincerely attempt to rid the Church of the "filth" and perversion, more so than any pope before him or clearly the current occupant of the papal office. Clearly, we have seen him as a father.
But the reality that we must all face is that he is a coward. A pathetic failure. A man who threw down his cross and abandoned his children to wolves, to evil men. The three links below are from people with much more time and inclination to research and report than this writer, particularly the extensive essay by Hilary White at The Remnant.
I don't profess to know the full truth but what I do know is this, it is not found to be in workings of Jorge Bergoglio.
https://remnantnewspaper.com/web/index.php/articles/item/3786-et-tu-benedict-some-final-thoughts-on-joseph-ratzinger
http://www.ncregister.com/blog/edward-pentin/full-text-of-benedict-xvis-letter-to-mons.-vigano
http://magister.blogautore.espresso.repubblica.it/2018/03/13/the-double-foolish-prejudice-the-complete-text-of-the-letter-by-benedict-xvi/
https://akacatholic.com/benedicts-letter-real-forced-or-fake/
https://onepeterfive.com/new-sources-bolster-report-that-pope-benedict-was-involved-in-synod-compromise/