Haven't had a chance to look at it yet. But even if so it just shows their own self deception so to speak. All humans, atheists and theists alike, to function have to believe their life and what they do has value, meaning, and purpose. And yet if atheism is true, life has no objective value, meaning, or purpose, and atheists have to believe in the self deceiving illusion of meaning, value, and purpose to function (and to avoid spiraling out the way of Camus and others who recognized the logical end of atheism should be abject despair). So healthy, well adjusted, hopeful, and even 'moral' atheists (which is an illusion too--objective morality--if atheism is true) are delusions atheists must maintain and is living above and beyond what the logical end of their metaphysics warrants.
They have to believe one way, but act another