I hope you know that Veterum Sapientia, was written before Vatican II opened, and it was in Vatican II, that the vernacular was allowed to be used in the Mass.
Also, Pope Paul VI in accord with The Constitution of the Sacred Liturgy, allowed for a time of experimentation by the Bishops, to see what worked best in fulfilling the desires of the counsel. What the Bishops found was that the vernacular was so well received, it became the norm and up until very recently, finding Mass with Latin in a Parish, was rare.
I don’t oppose Latin in the Mass, I have often attended Mass in Latin at a local Benedictine Monastery. Its beautiful for those who want to put in the extra effort to learn it.
However, it never became an easy language for me to understand, and in my parish and parishes around me, it would not be well received. If it were, the one local parish that has a TLM, wouldn’t have been forced to hold the Mass at 12:30 PM on Sundays. This was forced because those attending, were predominately from outside the parish.
Jim