And yet, "religion" as I have come to know it in my last two years on this forum, encompasses philosophies that do accurately represent a good and useful understanding of the world. Granted, it's not used to explain the orbits of the planets, the temperature on the sun's surface, the causes of lightening or thunder, and the flow of electrical energy, but then that was never its intent nor function. It presents a picture of the individual's place in the world, replete with metaphoric imagery and mythic grandeur.
So "what religion does to people" in Dawkins' view, generalized as a statement about "religion" itself (as you insist it is), compares "those who understand" with a group ("us") who "learn" the "lesson" that it teaches (which one, I suspect I know) --how can that not be interpreted other than that there is a group of people with misunderstanding, or worse a lack of understanding, of whatever it is Dawkins' represents as the understanding of the world? Therein lies the bigotry, as I see it.