Well, it certainly seems that this Dawkins book has sparked some debate. To me, this is part of what makes any book successful. If any author proposes that one religion is necessarily better or more accurate than another, then clearly, the author going to offend a large number of people who follow another line of thought or belief system.
I find it fascinating how people can so easily be diverted from the core aspects of spirituality which supposedly link all religions together. Whatever happened to the idea of common good, love, peace and all that? Something happened somewhere along the way that drew new attention to the power of greed, lust, envy, pride, gluttony, and other vices.
Globalization is mentioned in Dawkins book. The concept poses for humanity a potential problem of plurality. That is, people have too many options for religion without a universally-accepted equal value for each option. The dawn of the global age signaled the end of social isolation for many religions. People impose their own value judgments on religions themselves and on other people. What's next?