I think that's one of several stereotypes or memes in the film. You have the angry, bitter atheist who doesn't believe in god but blames him for something, the pure young Christian man who wins the day because Good Always Triumphs, and the "no atheists in foxholes roadside ditches with their entrails hanging out" meme.
"Well, evolution is a theory. It is also a fact. And facts and theories are different things, not rungs in a hierarchy of increasing certainty. Facts are the world's data. Theories are structures of ideas that explain and interpret facts. Facts don't go away when scientists debate rival theories to explain them. Einstein's theory of gravitation replaced Newton's in this century, but apples didn't suspend themselves in midair, pending the outcome. And humans evolved from ape- like ancestors whether they did so by Darwin's proposed mechanism or by some other yet to be discovered."
-Stephen Jay Gould
-Stephen Jay Gould