That's not true, sorry. I don't need to specifically believe "there is no God" to be an atheist; I'm perfectly fine with "as far as I can tell, there's no god, and the claims offered about one don't convince me".

Further, I *can* state positively that specific religions are false, based on contradictions, things that have disproved their dogmas, etc; this requires no taking of anything on faith. For example, any form of Christianity that claims the earth to be 6000 years old I'm happy to say is wrong, and there's no unreasoning belief involved in that.