Yeah, we've covered this any number of times. Think of a simple scenario, like the one I've mentioned several times: you find muddy footprints in your kitchen. You know that Peter is out of town. Do you need to know who did put the footprints there in order to know that Peter did not? Clearly not. Similarly with theism.
That might fit if I were deist where god is on vacation. Anyhow, what about the origins of the universe allows you to rule out some sort of deity?