[ Since the 1970s evangélicos have made enormous gains in populous Latin countries. They probably make up 15 percent of Brazil's people today, 30 percent of Chile's, at least a third of Guatemala's. ]
Is that a BAD thing?..
Sounds like the author and perhaps the Catholic Church, in South America believe it to be.
Spreading the Gospel of the Salvation of Jesus Christ, should be the aim, not the denomination as there are no Catholics, Baptists, Methodists, etc. in heaven -- only Christians.