As accepting the existence of God a priori requires precisely that lack, he's right. At the very least, the devout either lack or suppress the ability to think critically when it comes to their own beliefs.
Jesus saved me from that accident, not my thousands of hours of driving experience!
God saved me from that <insert injury or disease here>, not the doctors and their hard work!
God saved me from that fire, not my smoke alarm!
Jesus manifested as a blotch on my pancakes!
God gave me that promotion at work, not my hard work and dedication!
This two thousand year old book is literal truth because it says it is, and it wouldn't lie!
Hell, several months back, in this very thread, we had "1200 AD was 3000 years ago!!!".