The guy does raise some interesting scenarios in this video. It is worth watching.
I still find it interesting that Google continues to stress that duplicate content does not result in a penalty; they just filter out the pages with duplicate content. While technically this is correct (it's a filter, not a penalty), it still smells like a penalty for the duplicate content pages.
I also find it interesting that Google is starting to use several people other than Matt Cutts in their videos. Perhaps they are looking for the next Matt Cutts protege.