It's just amazing how the point that sugar causes obesity and other harms has been ridiculed for decades but is now starting to be widely accepted. Huge amounts of data were ignored, and now the case is pretty overwhelming.
People have really weird relationships with food, often taking concepts to the extreme. Too much sugar is bad, so limit added sugar intake as much as possible and prefer artificial sweeteners to sugar.
Rather than sensibly moderating consumption we've gone from eating far too much of one thing, to trying to eat none of it, and indeed trying to replace it with something completely artificial. Not to sound like one of those "anything that's natural is better for you" people.
It's just a lateral move.
No carbs vs. no fats might turn out to be a bad thing as well.
It makes me wonder if as humans we make generalities too often that cause us to take up sub optimal behaviors that have long term negative outcomes.
You: but he's a physicist, in biology things are harder to prove
(the point is that people have confirmation bias even when things are 'easier' to prove)
People have confirmation bias regardless of being shown evidence, it's the central feature of confirmation bias that you interpret new information in a way that supports your pre-existing view. It's a human trait not a feature of the subject matter.