Thanks, I didn't know that - although are you speaking of a Carmelite "rite" or "missal"? The pope states that the two missals did not mean there were two Latin rites. At least that is what the motu proprio says.
In the end, I don't think the problem is having several rites/missals, but the abuses that have crept in because bishops were not holding wayward priests accountable for their deviant changing of the Liturgy on their own authority. Less vague rulings would help here.
The NO Mass, when originally conceived and celebrated with due holiness, is quite capable of teaching the faithful through the Liturgy. People can witness this on EWTN.
Regards
Yeah, all those are more “uses” or “missals” than completely-separate rites.