I think it’s very likely that this will be repeated in the Papacy. Separate from the theologically unique status as Vicar, the Pope in temporal affairs is still in some ways a “CEO” of the hierarchy who labors for very long hours (12+) and this is a fact of life: I think it’s highly unlikely we’ll have bishops working in the role into their late 80s and 90s in the 21st century when it is possible to be passed down to (relatively) younger blood.
It’s a break from the norm, but for most of history people often didn’t linger for decades and gradually become more and more faint. They got cancer or fever or an ensemble of combined health problems or something else and then kicked the bucket sometime in their 50s or 60s. The Papacy has also become more Papal. In the medieval ages it wasn’t even particularly important which bishop was Pope. How did this concern a merchant or farmer in Ireland or France or Poland or somewhere else? It didn’t. They lived and worked and died having been catechized and formed completely independent of what was or wasn’t happening in a single city in Italy. There was some noble-blood clergyman or another in the diocese of Rome who had the office and this didn’t immediately affect 99% of people’s lives. Nowadays the Pope - whether it’s a good thing or not - receives media attention just as frequently and rigorously as a major head of state.