That's a good point - there's probably some degree of latitude to allow unsubstantiated claims that are mostly harmless. Maybe. Or maybe I'm just trying to envisage a society in which religion is so limited it is small enough to take into the bathroom and drown in the tub (to misquote Grover Norquist on the government).

By the way, you'd be surprised to know how many religious people claim atheism is just another religion. They so don't get it when you do perfectly.