I have to agree that if people think that they can live on a steady diet of frankenfoods and be healthy, they're in for a rude awakening but that's not (or shouldn't be) the point of low carb in the first place.
The majority of our foods should be unprocessed meats, vegetables, some lower glycemic fruits and perhaps some higher carb whole foods once in maintainence. An occasional treat is fine, but morning, noon and night is not fine nor is it healthy for anyone.
The question becomes, how do you educate those that seemingly don't want to be educated? Those that are living on a steady diet of low carb frankenfoods are likely the same ones who mistakenly thought that as long as the product was "low fat" they could eat as much as they wanted with impunity. They are also likely the same ones who didn't bother to do any self-educating on the subject and instead relied on the "experts" and the media to educate them (and we all know how the media gets everything wrong when it comes to reporting on low carb).
I agree with Kristine. If folks can't be bothered to pick up and read a book on low carb and get the message that whole unprocessed foods are what should be making up the majority of what we eat, how are they any more likely to read this one?