Eddi said:
Premise 1: Having a God Concept makes any belief system a religion - if a belief system features a belief about God then it is a religious belief system
A religion usually involves more than just knowing the meaning of "God."
Premise 2: Atheists have a God Concept. They have a position on God, an opinion on God that qualifies as a position and an opinion on God, even though Atheists either see no valid reason to believe in God or explicitly reject such a belief. The point is, they still have God-beliefs