In order for someone to "Reject God", they must first believe that God exists. Once someone accepts the god exists I can see rejecting them, or refusing to follow them on moral grounds, but not logical grounds. Plenty of gods are too evil for an enlightened moral person to follow.
I get that too, but I think it’s also possible for one to flat-out reject the existence of God, without ever having accepted the existence of God in the first place. And again, that’s their prerogative.