You're right it was a broad generalization but it does have a decent amount of truth to it. Just like your generalizations of the south it does hold some truth as well. We've got backwards hillbillies here but it's not anything like its perceived to be. I can't speak for alabama. When it comes down to it there strong conservative values in this area and most of the country. Inherently we keep to ourselves with a live and let live attitude. That value does not seem to be shared with people on the coasts.
Its a narrow view to think that one side is "better, less intrusive, yadda yadda yadda" than another. Conservative/liberal are both intrusive, hypocritical, and look at others with a holier than thou attitude.
Its telling when Batmans is the voice of moderation.