[Serious] Atheist Dogma

[Mr.wizard]

Me personally yes, but had I not heard the claims, not accepting the claims is the only position I could be in, for no other reason than I haven't heard the claims.

Right. A person, like a baby, who has not heard the claims is trivially atheist. 

I'm talking about adults who are not brain dead, who have grown up in any human society that has existed on the planet in the last two millennia or so. All of these people have heard religious claims. 

If such a person finds the claims of religious people unpersuasive, then he is an atheist in the adult, non-trivial sense.

Why should anyone care if you consider a babies non-belief trivial? So a baby doesn't exit the womb contemplating the existence of a god, why is this a problem and why does this require a change to the definition of atheism?

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Me personally yes, but had I not heard the claims, not accepting the claims is the only position I could be in, for no other reason than I haven't heard the claims.

You are not inclined to call yourself an atheist if you do not understand what the meaning of atheism is. You don't call yourself a "theist," because you know it does not apply, because you understood the meaning of it, as a subsequent aspect of research.

The label doesn't matter, the concept is the important part. Don't call yourself an atheist, I don't care, but not believing in god is not believing in god no matter the label you want to slap on it.