They focus on arguments about Mary, purgatory, Saints, councils, Papal authority, and traditions. That’s not to imply that differing views on these subjects aren’t vitally important because they are. But they all generally point to the spiritual elephant in the room of every Catholic and Protestant; It’s the subject of salvation and how to obtain it.
Counterfeit Christianity
The question that needs to be addressed in light of scripture and in view of eternity is: Should Protestants evangelize Roman Catholics?
Satan is using spiritual mass deception to fool the world, even many professing Christians. The cost of spiritual deception is far greater than being conned by counterfeit currency because it has eternal implications.