He's rubbish because the total number of people using e-readers is still tiny compared to paper books. E-book piracy is thriving very well, considering what can be found with zero effort on the darknet. An honest survey of the dishonest would show, IMO, that technically savvy users are pirating at similar rates to music piracy. It is just we don't have as many e-readers as DAP's (digital audio players) yet.
There is an entire market segment among Kindle users who purchased that device because it requires almost no computer literacy and makes purchases easy and painless (ignoring what happens if the DRM server or Amazon ever dies). I can believe there is reduced piracy in that particular group.