Unlike Montini, Pope St. Pius V did not suppress any Mass rites that were over 200 years-old.
So? Both cited the same authority when imposing obligations with regards to the liturgy. Both Quo Primum and Missale Missale Romanum utilized the same type of preceptive language: https://www.sodalitiumpianum.com/did-paul-vi-illegally-promulgate-the-new-mass/