This article is very interesting but in my mind it is impossible to measure. I think Christians have a harder time believing in a real Adam and Eve then they do in believing the world was created in six days.
I agree with you. My first reaction though was to condemn Christians for a lack of faith, but is it really surprising when you are raised in a society that elevates science and marginalizes God and faith in Him. I don't see this "new normal" changing. I believe it will get worse.