I apologize for not realizing you were attempting to explain something.
The only explanation I can gather you are making is that Atheists are irrational and believe that the only people who think Atheism is a religion are irrational theists who engage only in outrageously fallacious argument. I disagree with that opinion.
If you wish to continue this discussion, we should do it in the other thread about Atheism and non-belief since you don’t seem to be addressing Communism and religion.