Humorous. I don't have any problems with this concept, indeed it was inevitable for something to fill the moral compass void that can come from atheism. I really only have one potential gripe. If these "churches" become evangelical in anyway (seeking converts), they can not preach the evils of religion.
Faith that there is no god is still faith. Once you take on the trappings of organized religion, you become nothing more than a religion sans deity.