With Traditiones Custodes Pope Francis made a few claims which were quite inaccurate but which do work in the reverse. In addition to claiming that the one form of the Roman Rite is the Mass of Paul VI he claimed that using Latin for the Novus Ordo would largely solve the problem for those attached to the Vetus Ordo. That claim is not true because there are a thousand of differences between the two Ordos.
The reverse, actually, works quite well, as proposed by Vatican II: Vernacular, yes; Novus Ordo, no! There is, indeed, only one form of the Roman Rite, it is the Mass of all times, the Mass of Saint Gregory the Great. You can do that in English and it would be the same thing! Croatia has been doing it in the vernacular (Old Slovanic) for centuries!
"The Gregorian Rite" is the unique Roman Rite! And no traditionalist should have a problem with the Tridentine Mass in the vernacular, for those congregations who should want and profit by that. And those attached to the vernacular worship, if their ritual were identical to the Latin Liturgy, would readily understand and accept the Traditional Latin Mass.
The Novus Ordo (The Bugnini Invention) needs to be abrogated as unfitting for Catholic worship and the Mass of Saint Gregory declared the unique expression of the Roman Rite (with some minor exceptions for other ancient Rituals, e.g. the Ambrosian Rite, the Mazorabic Rite, the Dominican Rite, etc.).
