Sean McManus has a more considered article on atheism and atheist churches:
…some atheists are taking seriously the idea that atheism needs to stand for things, like evolution and ethics, not just against things, like God. The most successful movements in history, after all—Christianity, Islam, Hinduism, etc.—all have creeds, cathedrals, schools, hierarchies, rituals, money, clerics, and some version of a heavenly afterlife. Churches fill needs, goes the argument—they inculcate ethics, give meaning, build communities. “Science and reason are important,” says Greg Epstein, the humanist chaplain of Harvard University. “But science and reason won’t visit you in the hospital.”
Many atheist sects are experimenting with building new, human-centered quasi-religious organizations, much like Ethical Culture. They aim to remove God from the church, while leaving the church, at least large parts of it, standing. But this impulse is fueling a growing schism among atheists. Many of them see churches as part of the problem. They want to throw out the baby and the bathwater—or at least they don’t see the need for the bathwater once the baby is gone.