How about we just say that carbohydrates, particularly refined carbohydrates, are at the top of the list of things one would do best to avoid or minimize, along with trans fats. (He says, as he drinks his morning Mt. Dew and donut.) We should be wary of making affirmative statements without exceptionally strong evidence. We're not discussing sports statistics or the weather. Unsubstantiated or poorly conceived advice by both professionals and in general public discourse has caused irreparable harm to millions.
As to me being unqualified to say what I said, according to you: I wonder whether you've spend more time absorbing the medical research literature than I have. I've spent the last three years intensively studying the topic.
This is complete, unsubstantiated conjecture on my part, but perhaps the evidence that showed that dairy and red meat were relatively bad for cardiovascular health had something to do with their comparatively large percentage of trans fats.