Original sentence: A similar argument can be based on Occam's razor.In everyday language this belief would be called agnosticism rather than atheism.It is also worth noting that many, perhaps most, atheists deny that arguments against the existence of God are necessary to support or sustain atheism.It is then not up to atheists to prove that God does not exist; It is up to theists to provide proof of their own.Without such proof, they argue that it is not rational to believe in the existence of God, any more than it is rational to believe in the existence of fairies, dragons, demons or unicorns
Edited sentence: It is then not up to atheists to prove that God does not exist; it is up to theists to provide proof of their own.It's also worth noting that many, perhaps most, atheists deny that arguments against the existence of God are necessary to support or sustain atheism.Without such proof, it is not rational for atheists to believe in the existence of God, any more than it is for them to believe in the existence of fairies, dragons, demons or unicorns