And as we can observe, the Atheist Denialists are out in full force! Spreading their OWN "Gospel" of truth, hoping to glean support from their fellow Atheists, because this is vitally important in facilitating their denial.
Most of us know there is no Santa Claus or Easter Bunny, we understand these are fictional characters created by man, and not real entities. However, if someone posted a thread extolling the wonderfulness of Santa and Peter Rabbit, I doubt you'd have very much legitimate response. You may have a few who weighed in to say how goofy they thought you were, but read these responses, they go way beyond that. Almost to a fault, the Atheists post elaborate explanations of what they believe (or don't believe), they even do as Apple and cite actual Scriptures! Why do you think they feel so compelled to respond with these obviously well thought out arguments and responses? Would you (or anyone) go to this much trouble to express your vitriol and hate for the Easter Bunny? There is really no logical reason to viciously attack something that you do not believe in, other than to cope with denial.