[JMJ333]

Didn’t the Church suppress a number of rites at the Council of Trent and insist on the Tridentine Rite? I wonder how the “Traditionalists” of that era reacted to that. Hold their breath until blue? Tight-fisted tantrums because they didn't get their way?

[ultima ratio]

It is frequently believed that the Council of Trent instituted the traditional Mass that is called Tridentine. This is false. It simply codified the Mass "in perpetuity", confirming what had already been in wide use. In addition Quo Primum banned all Masses which had not been then in existence for at least two hundred years.