The problem is not that Christians don't understand catholic dogma, rites, rituals and practices.....it's that we don't agree with that which opposes the God of the Scriptures.... Rather, we reprove and correct false and misleading instruction and teachings of the catholic church based on God's Word.... just as God said to do.....
Go tell that to the leading Protestant theologians who for many years taught and wrote books at leading Lutheran and Episcopalian institutions including the President of the national Evangelical Theological Society (Dr. Beckwith) and then chucked it all up.