The question is about the boundaries of what it means to be a religious adherent or not.
As an example, lets take Christianity. We have competing and contradictory claims from different sects of Christianity as to what represents true Christianity and what doesn't? Catholics and Protestants used to vilify and denigrate each other, each denomination claiming to be the true Christianity and denouncing the other as false, not even Christian. Who gets to decide who is right or wrong? Where does Christianity or any religion for that matter begin and end?
Does it really matter and why?
As an example, lets take Christianity. We have competing and contradictory claims from different sects of Christianity as to what represents true Christianity and what doesn't? Catholics and Protestants used to vilify and denigrate each other, each denomination claiming to be the true Christianity and denouncing the other as false, not even Christian. Who gets to decide who is right or wrong? Where does Christianity or any religion for that matter begin and end?
Does it really matter and why?