I just did, here. As I suspected, you twisted the a story a little. Dawkins speculated that it is possible or imaginable that somewhere in the universe a highly advanced civilization evolved, and hinted that there is a possibility of an "intelligent design" but not through divine means. I find that a little to far fetched (and so does he, apparently, but he used it as a pure speculation).
Also, the wekaness of Ben’s argument (if I can call it that) is that he uses the argument from ignorance — if science can’t answer it, that “proves” the religious explanation. Wrong.