I suppose it's the only way they can make sense of anyone denying the existence of God. Of course it makes no sense. No one can hate something they don't believe exists.
Probably because Charles Darwin hated his God so much it drove him to concoct a false theory of evolution just to keep our Intelligent Designer and The Bible out of the scientific picture. Now we are teaching this hatred to the gullible minds of our children in every schools science classes around the world.