[PapaBear3625]

There is nothing compelling me to only go to Mass at the church that is closest to my residence. When I go to Mass, I put my donation in the collection plate. Whichever church I feel like showing up at, is the one which will receive my money

Seems like a self-correcting problem, if enough parishioners decide they like the Latin mass

[my_pointy_head_is_sharp]

The Mass nonetheless took place, with the readings in Latin, the priest ... who turned his back to the assembly

Just because the mass is in Latin doesn't mean that the priest must turn his back to the congregation. They can modify that part of the ritual, and he can face the congregation. I don't know that I'd like to look at the priest's back for an hour.

it cannot become a way to do proselytisms or to please the nostalgics

The nostalgics!