Islamic fundamentalists are dangerous; Jerry Falwell is merely foolish.
I don't get your problem with Falwell. He is a Christian who has read the Bible. Everyone knows that when the people of Israel strayed from God tragedy befell them. They spent a lot of time as slaves. Falwell is simply warning us out of Love according to his Faith.
This does not shift blame from the Islamic attackers it is a comment on the nature of the defenders (us).
We need to take what he said and learn from it.