I haven't backed off from the claim at all. It's a very good analogy for what goes on in these sorts of debates. "I suppose it is true that you are more experience prostrating yourself for an imaginary friend..." Just can't control your fingers, can you?
That example of logic is precisely what I am referring to. Not only is the premise incorrect (it's not true that this is how children are taught in every Church up and down the country) and, secondly, even if it was true, you cannot know how many reasons such a person could then go on to find for their faith and in the process of study, come to know much more about the truth of what they've been taught or the untruth of it. Perhaps they've been taught an unscriptural version of christianity, in which case the logical outcome would not be rejection of scriptural Christianity, just the unscriptural version they'd been taught. And for many atheists, their atheism could be founded on something as simple as their opinion that they just don't think God exists because he's never spoken to them directly or performed a miracle that they can observe in their lives.
Not only is it a terrible argument for those reasons alone, it's made considerably worse you consider many religious people are not brought up with their religion but are converts. By your logic, does that make a convert more enlightened than a non-convert?