On paper yes. In reality most of the country is about as Catholic as Nancy, Pope Francis, and Joe. Product of both Theological divides that arose in South America. Which was generally far more left-wing liberal keeping with heavy influence by Left-Wing belief and Soviet influence throughout the Cold War.

As it goes for most organized Christian religions. Across large parts of the world. Someone can sit their ass in a Pew every Sunday. And call themselves their denomination of choice. But that doesn’t necessarily translate to them actually being Christian.

About the only section of the Catholic Church recording consistent growth is the Pre-Vatican II Latin Mass Traditionalists. Everyone else is either stagnant or declining.