Maybe the explanation for the execrable action of executing the Real Mass and replacing it with the Lil' Licit Liturgy is owing to the ecclesiastical energumen who were embarrassed by these expressions so redolent of truth and Tradition which, by their very existence, marked the stark differences in worship between members of the one true faith and those poor souls born into the institutions of so many imitators of the one true faith.
Where once we had a healthy desire to actualise the Great Commission and teach the world about the true worship of the true God we have now eviscerated the Great Commission and replaced it with the Great Ecumenism and so we now worship GED (Great Ecumenical Dialogue) rather than God.