IGIT writes:
But why doesn't it prevent atheism from being preached?
What mental gymnastics did you have to go through to conclude that anything that differs from one particular interpretation of one particular doctrinaire document of one particular religion must be supporting atheism? Buddhists, Hindus, Taoists, Shintoists, and the adherents of a great many of the worlds other 6000 religions currently being practiced would have no problem with these age attributions, and that includes a great many people who consider themselves to be christians.
In another sense though you are quite right if we take "atheism" for its literal meaning: without theism. Then the constitutional prohibition against government establishment of a religion does imply that all government sponsored pronouncement must be "atheistic". "Atheism", taken literally, is not the same as anti-theism! In fact, it is your position that is anti-theistic, proscribing the doctrines of 5,9999.500 other religions.