Here's another argument to add to the list. Modal normativism is growing in popularity as an account of the nature of modality. However, on that view, modal properties are metaphysically lightweight, and do not exist as features of mind-independent reality. However, on standard theism, modal properties are not metaphysically lightweight, but rather exist as features of mind-independent reality (e.g., the necessary existence of god and the contingent existence of the universe). Therefore, to the extent that one has reason to accept modal normativism, one thereby has reason to reject standard theism.
