>>Traditional Latin masses are flourishing in the west.
I wouldn't use the word flourishing. Rather, I'd say they simply attract like minded people. They aren't sprining up like daisies all over the place, and they have not led to an increase in attendance.
Traditional Latin isn't the solution. What we face is a cultural decline, which has impacted on the faithful as well..
If anything, VII has helped to stem this decline. It would be farrrrr worse if all masses were in Latin... (You think people don't pay attention to the mass in English, just get these people into a latin mass -- they'll be snoring in the isles...)