i don't think this is bad. he doesn't seem like he's out to demonize paleo or primal, just observe a few things. i'm sure plenty of people will disagree with all 12 myths (particularly anything that says grains aren't that bad), but the reasons he mentioned are good. for one thing, paleo is getting a lot of momentum, and plenty of people have a blind infatuation for it, as he puts it. i tend to think that the primal blueprint looks at paleo lifestyle with a little more freedom and common sense, but there are still plenty of people who jump in with unrealistic expectations and don't really give what they're doing enough though.
and, of course, he's got a point about carbohydrates. sure, there are plenty of primal friendly carbs for people to enjoy, but i think some people become carbphobic...i certainly was for a while.
i don't think he's out to get paleo/primal followers to start eating cake and soda (despite mentioning the soda), but a little dissent is good...particularly if it gets people thinking.