Is Moral Nihilism a Morality?

[vulcanlogician]

EDIT: think of it like how strong gnostic/atheism is not the same as weak/agnostic atheism. Not having a belief in God is more nihilistic than positively believing that God does not exist.

You see, though, that's how I think of moral nihilists. They are "atheists" about morality. I think error theorists qualify.

Any atheist, whether agnostic or gnostic is going to claim (really by default) that all statements of fact about gods are false. If they believed otherwise, (ie. that certain statements about God can be/are true) then they would necessarily be theists. Likewise with error theorists...