How do you know? Are you asserting that the current Mass is the "Mass of all-time?" How is that any different from what Pius V did? If Paul VI had the right to change the Mass, how are any future popes prevented from changing the Mass just as he was?
"If Paul VI had the right to change the Mass, how are any future popes prevented from changing the Mass just as he was?"
Hehehehehe.
If the concern is VALID Sacraments, then the NO will be either straightjacketed or suppressed. If the concern is being more 'inclusive' and less 'offensive' to those who HATE the True Faith, well....