Roman Catholics often raise the topic of authority and claim that we need an infallible interpreter to interpret Scripture. This, they say, means we need the papacy. But what does the papacy actually do or care about?
When pressed, however, Roman Catholic apologists typically acknowledge that an allegedly infallible interpretation has been provided for fewer than 20 verses (see this document from Roman Catholic apologist and pilgrimage promoter Steve Ray). Moreover, when you dig into the claims about those verses, most of the interpretations are actually the alleged interpretations of ecumenical councils, rather than popes.
On the other hand, the Roman Catholic church also teaches that infallibility is exercised in the designation of a deceased person as a "saint." How often is this alleged gift of infallibility exercised? John Paul II canonized 482 saints in 26 years (apparently a record number). Benedict XVI canonized 45 saints in 7 years. Francis has canonized 29 saints plus 812 companions of one of those, in his three years so far as pope.
I think it's fair to say that papal priorities are revealed by papal actions. In this case, the priority of the papacy is clearly on the veneration of the deceased, rather than on the study and interpretation of Scripture. In the lifetime of most of my readers, the popes have never once infallibly interpreted Scripture but have allegedly infallibly canonized saints literally hundreds of times.
Roman Catholic apologists may say we need the popes to understand the Scriptures, but Roman Catholic practice demonstrates that announcing saints for veneration is far more central to the actual papal role.