Exactly. Evolution doesn't offer any morality in the exact same way that organic chemistry, plate tectonics, and nuclear physics don't offer any morality. They're sciences, not morality systems. He treats evolution as if it were a rival religion, rather than a science, so many of the arguments he makes are religious arguments against it. To his mind, the "rival religion" of evolution doesn't offer any morality, therefore Christianity is a superior religion.
But I think we may be overthinking it.