Stand at a mirror in your best hat. Take a breath and slowly start to say, "I know better than Archbishop Lefebvre which Missal we must use". I don't think you will finish that sentence!
Many of the questionable judgments (I want to say “errors“) +Lefebvre made with regard to the missal are mentioned in the very sermon of +Zendejas. Here are several of them:
#1: “The 1955 Holy Week was not a preparation or groundwork for the Novus Ordo.” The consensus of liturgical scholars today recognizes it was.
#2: “The same people who revised the Bugnini Holy Week rites were not the same people who created the Novus Ordo.” In fact, there’s a good deal of overlap in personnel, as one might expect, given that only 13 years separated the 1956 experimental rites, and the 1969 Novus Ordo.
#3: “There is nothing harmful in the Pian Rites.” On the contrary, most of the changes are based upon condemned archaeologism, and were destabilizing enough to the faithful that the Archbishop of Dublin and New York wrote to Rome of their concerns, papal MC, Mgr. Gromier called them an act of vandalism, and faithful like Evelyn Waugh felt threatened in their very faith.
#4: Being oblivious to the aims and errors of the preconciliar modernist liturgical movement (of which we were all taught in the SSPX seminary, with Matthew as my witness in my liturgy class!), which served to condition him to believe the aberrations only occurred after the Council: Dialogue Mass and Pian Holy Week changes are therefore considered “traditional” (despite the dialogue Mass existing nowhere in the world prior to 1915 (+/-), and the extinct Pian Holy Week rites having only a 13 year history in the Church).
#5: Inconsistency in the application of his principle that, “If it is not against the faith, we must accept.” We’re this true, +Lefebvre would not have been able to regress from the 1964 missal to the 1962. Also, all priests of the SSPX would logically be compelled to recite the revised Psalter of Pius XII in their daily breviaries, rather than the pre-Pian traditional psalter: Far from being against the faith, the Pian Psalter is a more accurate translation, though it has lost the poetic aspect of the traditional one.
What I do appreciate in the defenders of +Lefebvre’s liturgical decisions, is their honesty in acknowledging their fidelity to them is based mostly (not completely) on human respect, rather than the merits of the missals themselves.
I note in conclusion that Vigano has called for a reversion to the traditional Holy Week rites and missal, as he does not labor under the impediment of the 1962 missal.
As +Williamson once said to me, “Jesus and Mary once walked the earth, but since then nobody has been perfect.” Implicitly, that truism includes even my here, Archbishop Lefebvre.