The money quote: "This reflects a general principle in law: An equal does not have power over another equal. No pope who used perpetuity in his disciplinary decrees understood the term to mean that no future pope could ever amend or replace his legislation. And popes did in fact change some of the provisions of Quo Primum, even before Vatican II. In 1604, for instance, Pope Clement VIII issued new regulations for the Blessing at Mass, and in 1634 Pope Urban VIII changed the wording of the Missals rubrics and hymn texts."
And besides, for those who lived through the promulgation of the Novus Ordo Missae, they would tell you that the deprivation and removal of the Latin Mass from their parishes was far from "hogwash".
Unlike Montini, Pope St. Pius V did not suppress any Mass rites that were over 200 years-old.