The fact that there are people willing to vocalize this sentiment is troubling.
The fact that there are people willing to sit there and listen to it without calling them on it is more troubling.
And I suspect that since the Bible is written at an adult level and the Left Behind series is written at third-grade level, more people are taking the word of a sub-dime-story quality novel at face value rather than going through the difficult task of searching the Scriptures.
If book sales are an indication, it is sweeping the land. People are prone to mental laziness by nature.