"The modern habit of doing ceremonial things unceremoniously is no proof of humility; rather it proves the offender's inability to forget himself in the rite, and his readiness to spoil for every one else the proper pleasure of ritual." -- C.S. Lewis, from the preface to "Paradise Lost", ch 3
There's a treasure trove of material embedded in this thought that begs for development, though I haven't the time to do it at the moment. To begin with, it occurs to me that Americans and moderns generally are far more uncomfortable with the "pomp and circumstance" of any sort of ceremony than Europeans and Britons were at least a generation or two ago. Laymen are more comfortable in leisure attire than in neckties and coats, and a bishop is likely to be more comfortable giving a "high five" to one of the faithful than having his ring kissed by someone kneeling in front of him. How this would reflect on the Holy Father's penchant for gestures of humility and eschewal of traditional honors of the papal office, I'm certain I do not know, although it would likely make for an interesting essay.
[Hat tip to Keith Kenny]