My theory is that many, if not most, of these deeply pious individuals are incapable of considering contrarian evidence objectively because to do so would put their faith in danger.
I agree, but it's not only their faith, but their very identity is put in danger. To question one's identity is a scary prospect, especially when one's identity rests so heavily on their faith, and who is willing to do that ? Hardly anyone.
Would your life implode if you lost your faith?
Again, a very scary thing to contemplate, and most are unwilling to find out what would happen. If they did they might be very surprised, and not in a bad way.