Who said they were "included?" They are "tolerated" at best.
These people should never have been counted as "Catholics" in the first place. The Church should still be evangelizing them, but not accepting them into the Church until they were ready.
you do things your way, and we'll do them ours. We are more patient than the typical Protestant. If we can over a generation or two Christianize a people, we will do so. We dont' demand instant results.
SD
BTW, The Catholic Church has existed in Mexico for hundreds of years. You must be considering some very long lived generations.