It does not matter what religion, society finds ways to make corruption and myths. I grew up a christian, and we have a lot of that stuff.
Atheism is not a fact, it is just a position, that for most atheists religion has not convinced them a god exists.
Atheism does not prove anything. And you have now made a claim, that religion is a myth. Please prove a god does not exist. In your mind, you may be convinced, but the burden of proof now falls on you to prove to people like me (who has always held the god option open) that it does not exist.