This is very stupid way to put it

You have no evidence of no god.

You could disprove specific religions making specific claims, sure. But to say there is no god anywhere in the universe of any sort? That is not a claim you can prove.

Now if you want to reframe antitheists as anti-specific theology on Earth, then what you say makes sense. But you can't both propose a new definition mid-conversation, and then argue that my statement that was based on the first definition is stupid because you're using the second.