My posts on Xtianity may sound like de Boton’s thesis, but my point is different. Atheism can be a spiritual context (consider Buddhism and Jainism). You don’t have to ‘borrow’ from religion in some negative opposition turned picky-choosy. I will have to read de Boton’s book, and his criticism of the new atheists is important.
But the attempt to borrow from religion given assumptions that spirituality doesn’t really exist doesn’t work.