Is Everyone an Athiest?

“Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.”
― Bertrand Russell

We all are atheists about every single dead and "alive" God, we do not claim as our own. Even the popular, widely believed in God's have their atheist's, many of whom are theist's. For example, everyone who ever lived is an atheist in regard to Allah - including all the Hindus, the countless numbers born before the "revelation's" in pre-enlightenment Middleasten provinces occurred, and billions of other regular people alive today - the only exceptions are those who claim to be Muslims. The word Muslim can be swapped with Hindu, Christian or other Deities and the analogy does remain almost exactly the same.
So for every person who is a theist regarding Allah, to continue the example, there are those who are atheistic about him too, including ironically devout theists. This is something Bertrand Russel pointed out over a century ago. The three most popular faith's on offer in the world today, that have the most adherents, are fundamentally irreconcilable and incompatible on the claims they make about the nature of reality. So?

"We all are atheist's, some of us just do not know it yet" C. Hitchens.