For both operate under the same sola ecclesia premise, the church being supreme and irrefutable, thus asking challenging questions is an affront to them.
As is pointing out truths with scriptures.
Never get an "amen" for scriptures showing the difference between Biblical truth and clinged to traditions trumping God's Word.
Again like the Mormons, it appears there are Godly discussions in which they are forbidden to engage.
Can't allow bubbles to be burst that are blown with "holy" water.