I don't know if you spot this too: it is uncanny how often the Pope mentions something in the Old Calendar or the traditional euchology. I'm sure that he has imposed upon himself a self-denying discipline of always using the Ordinary Form (until SSPX conform?) for his public and private masses. But he undoubtedly keeps an eye on Tradition. In his allocution to the Roman Curia, he repeated over and over again the phrase Excita Domine potentiam tuam et veni; although all those splendid old Excita collects were shifted off the Sundays of Advent by Bugnini's semi-Pelagian sidekicks. Another example: yesterday the Vatican Information Service quoted his words about S Thomas the Apostle.
It is, of course, pure chance that S Thomas the Apostle, in the Traditional Calendar, comes on December 21, just before Christmas; "Interrupting", as Dr Bugnini primly put it, "the series of the Great Ferias of Advent". My problem with the rational transference of the Apostle to July is that he seems an admirable Patron Saint of Christmas ... if you can get your minds round that rather bizarre formulation.
The old Roman Mass-texts for Christmas are full of Light; there is poured upon us the new light of the Incarnate Word; God has made this most sacred Night bright with the shining of the True Light; we know the Mysteries of His Light on Earth; the new Light of His brightness has shone upon our minds. This reminds us of the theme of Illumination which the Tradition has always associated with Initiation. So the Baptised might be called the Illuminati; the Johannine pericope of the Healing of the Man Blind from Birth may be part of the Lenten propers preparing for Easter Night. Faith is Enlightenment; Faith is when the penny drops and we see everything rearranged in a new pattern; Faith is not so much the infusion by miraculous means of knowledge inaccessible by natural means as the radical restructuring of what the Carnal Man knows, but knows blindly. S Thomas saw the Risen Lord and thus saw all things differently, saw that the Rabbi of Nazareth was My Lord and My God.
Dom Gregory Dix talked about becoming what you are. Baptised we may be; yet our Illumination is not a static episode in the past but a becoming which is part of our daily being. We are never finished with the growth into seeing reality as God its creator created it and sees it.