"Latin didn't exactly set the African Church on fire 40 years ago, did it?"
Actually, the ICKSP is spreading the Latin Mass all throughout Africa. Michael Davies, RIP, wrote some great articles on their fluency in Latin and their wonderful singing.
But don't let the facts get in the way.
Are you seriously saying that Latin Masses predominate in Africa?
Surely you're not. You know better than that.
I will never forget being part of the Schola at a church music conference hosted by Christendom College. We sang a high Mass in the lower church at the Shrine. Directly in front of me, in the congregation, was a woman wearing a sari and obviously from Africa.
She absolutely BELTED out the Ordinary of Mass VIII with the choir.
This was in the early/mid 1990's.