Just my take, but I think one..."You gotta thank the Lord..." is not necessarily insulting to someone (or at least intended to be.) and also a figure of speech. I've heard my atheists buddy say "thank god!' after working on a project all day and finally getting it up and running. I don't think he's really "thanking God" it's just an expression.
"Well, in the wake of all this destruction surely you don't by into that God nonsense?" is deliberately insulting or meant to attack someone's beliefs.
I don't think the woman in the video took Blitzer's comment as insulting either. She corrected him and moved on.