Beck probably has ghostwriters. That excerpt was probably written by one of them, and could just be something that Beck signed off on because he's vaguely singularity-positive from having interviewed Kurzweil; it might be that Beck never read any of the references, and if that excerpt is is suprisingly high quality, we shouldn't automatically attribute that to him.
From the final chapter of his new book Cowards, titled "Adapt or Die: The Coming Intelligence Explosion."
The citations for the chapter include: