May be considered a "bad atheist", although a technical term would be anti-theist.
Not to be confused with an atheist.
New Atheist: "You believe in God? You know that's just a fairytale for people afraid of death, right?"
Christian: "I'm not really afraid of death, but I believe that afterwards we lead onto an afterlife."
New Atheist: (to himself) "It pisses me off so much that religion STILL exists."