I disagree with Craig about a lot of things but I think he's right about this. Atheism is a concrete position, with content that needs to be defended, like any other theological position. It gives an answer to the questions that Theology asks, and that is what makes it a theology. That answer, like any other, needs to be defended.

Removing God from the Universe has implications for almost everything else in it. This is why it is possible for writers like Richard Dawkins to write book after book articulating the numerous and important implications of God’s non-existence. The arguments in these books are often original and thought-provoking, and their conclusions might even be right. But their detailed thoroughness makes it impossible for Dawkins to claim that his position is ontologically simpler than theism.

I discuss this further here:

https://medium.com/@teedrockwell/the-tilde-fallacy-and-atheism-eef7e373e4de