This is relevant if we want to accomplish more than praising veganism to other vegans. The selective case made against all animal products is, of course, blindingly popular within vegan circles, but as Simon and Garfunkel said, "A man hears what he wants to hear and disregards the rest."
While we study the latest pro-vegan book or film, the meat-eating public reads this absolution of fats, and this condemnation of (processed) carbohydrates (to show just two examples from the comment section). It is then no surprise the public doesn't accept veganism is the only means of being healthy.
It just doesn't matter what we think of our community's latest book or film. When we find the latest book or movie "amazing" and "undeniable," just remember that raw foodists find their latest book or film just as "totally convincing." And the Atkins folks have their "overwhelmingly compelling" case, as do the South Beach folks, macrobiotics, fish-eaters, American Medical Association, etc.