Nice to see some balanced discussion here… I think a lot of the pre-post Vatican II debate arises from ignorance of history and lack of perspective. Pope Pius V decreed that Mass be said universally in Latin in 1570 - granted, that’s a long time ago, but for some 1500 years prior to that, it was said in the local languages. So Latin Mass is a reletively ‘new’ thing in the whole history of the church.
But Also:
In his famous Bull Quo Primum, Pope St. Pius V forbade changing the traditional Latin Mass.** Pope St. Pius V, Quo Primum Tempore, July 14, 1570:** “Now, therefore, in order that all everywhere may adopt and observe what has been
delivered to them by the Holy Roman Church, Mother and Mistress of the other churches, it shall be unlawful henceforth and forever throughout the Christian world to sing or to
read Masses according to any formula other than this Missal published by Us… Accordingly, no one whosoever is permitted to infringe or rashly contravene this notice of Our permission, statute, ordinance, command, direction, grant, indult, declaration, will, decree, and prohibition. Should any venture to do so, let him understand that he will incur the wrath of Almighty God and of the blessed Apostles Peter and Paul.”(Pope St. Pius V, Bull Quo Primum, July 14, 1570.)
Respectfully and God+ Bless.