There are thousands of creation myths. The creator takes on many forms and imagery. It is a personal choice which to believe or not. When someone says their belief is the only valid one, they can expect ridicule for those who believe otherwise, whether or not they believe in a creator or not. Besides, the creator must have a sense of humour - it created humans, after all (at least to those who believe a creator created them.)
I believe in a creator but not the one being peddled in the OP. That one is a psychopathic, jealous, angry, mean and nasty, insecure demon to me. That guy, to me can be summed up in the saying, "The greatest accomplishment of Satan was to convince people he was god."