Your points are flawed e-freak. Atheism is a state of mind not a organized system like religions. I don't even know why you have to bring up communism here. Smells like leftovers from cold war fear.
Also atheism isn't a belief. Atheism = disbelief. To proof religious beliefs as delusional is also very easy. Delusion means that one beliefs in superstitious things and no logical argument against it can change his view. This clearly applies to all religions cause all of them have superstitious fairytales in them that make no sense at all from a rationalistic point of view. Even if you belief in one delusion (i guess the christian in your case) you would agree with me that other religions like the mormon church or scientology make no sense at all and are obviously delusional. An outsider to christianity can only look at it in the same way.