Non-god-ism isn’t the biggest hypernym. Replace atheism with logical procedures. God is a very logical fantasy which satisfies basic biases. But it’s logically impossible, has no intellectual modalities, violates information theory and thermodynamics which are considered fundamental even to different logically achievable universes, etc.
Not all rationalists are nihilogonists as you claim. Nothingness doesn’t exist, isn’t tautological to empty spacetime and has no potential. The ontological continua (Everettism, many-worlds interpretation, relational quantum mechanics) provide alternative physical procedural foundations (official foundationalism is stationary = it requires magic/ the supernatural).
You’re too soft. You select what you like. You’re the only true God because your God is your slave and exists because he can meet your beautiful desire. Your desire is the sole criterion for truth. It supernaturally = magically immediately appears, because you hate rigorous procedures because they’re not softy enough.
I know that some theists are very tough, but their deepest foundation is softiness. Beauty defines truth according to them.