If God is, and is before the created world, it is silly to try to apply the rules of the created world (like rational logic) into its creator.
Also, you're at the core of it: it's not a thing. God is the totality.
But here it’s worth pointing out that it’s the major traditional religions that have anthropomorphised God — not atheists. The Bible for example describes God with xyz properties (mercy, kindness etc) — is it also “silly” to apply such clearly earthly, human attributes to God?
People anthropomorphized God for the sake of convenience, to be able to speak about God. But they (who got it) warned against idolatry, ie. mistaking the representation for the reality. Atheists fall for it by getting entangled in the way God is represented.
It’s almost like analogizing electricity with fluid dynamics (eg. the expression ‘the flow of an electric current’). It helps us visualize it, but it doesn’t mean electricity is water.