It looks a lot more like you made an assumption which was just wrong. If you understand that atheism is a lack of belief, it cannot be a touchstone, just as a-philately cannot be.
No matter, it's clear now.
Well, it was you who asked me. I just pointed out that the question has already been answered in this thread, so if your question was genuine, you could find out in just a few minutes. Whether you do or not is no concern to me.

