Your logic sucks. All you argued is that atheism requires faith, not that it is a religion.Atheist is a Religion.
Synonyms: credo, creed, cult, FAITH, persuasion
faith -(1): firm belief in something for which there is no proof
Belief that there is no Deity or Deities.
Hence - Atheism = Religion
And you didn't demonstrate that atheism requires faith, or is a firm belief in anything. I am an atheist, I have no such firm belief in anything for which there is no proof, and thus I have neither faith nor a religion.
Faith, and therefore religion, are irrational. Atheism is rational. There is no such thing as a rational religion.