Since the metaphysical naturalist (atheist) worldview says that "all that there is" is all that exists in nature - it logically is more narrow than any worldview which includes more than nature in its formulation of "all that there is."
Since the metaphysical naturalist (atheist) worldview says that "all that there is" is all that exists in nature - it logically is more narrow than any worldview which includes more than nature in its formulation of "all that there is."But then, how exactly do you define "nature"?