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I would agree with you, had I not read his encyclical on Human Sexuality or the Life of Christ or who we are to God, etc. St. Pope John Paul II was an avid fan of Mary, and at times it went too far, but when it came to explaining the faith and writing theological treatises, the man was a Christian. A flawed Christian, but so was Peter, and so am I.
But when you're the chief theologian of an entire "true church" you really should have the main points, and most of the finer points of your theology down.