Yes, I’m on one side, with dictionaries, etymology, and the majority of atheists, and you’re on the other side. I would agree with you but then we’d both be wrong.
Google:
noun: atheism. disbelief or lack of belief in the existence of God or gods.
Gnostic - adjective. relating to knowledge, especially esoteric mystical knowledge.
Me:
Theism is belief in a god, atheism is a lack of belief. Atheism is not necessarily a belief that god does not exist.
Gnostic is about knowledge and not belief
If it makes you feel any better, that house would sell for at least double that price where I live.