The general public's understanding of food is still stuck in 1990s "destroy all fats (and completely ignore the sugar we replaced it with)" diet culture.
The fact that people still believe in reducing fat as it's own goal (instead of being an easy way to reduce calorie content) is a testament to how bad the public is at identifying fact from fiction.
Then you have shit like the influencer foods, "Feastables" and "Hydration beverage" Prime, which is just flat soda. It's pathetic.
Or think of all the dude bros who insist on dry scooping cup fulls of protein+caffeine powder, and going home to gorge themselves on two pounds of chicken breast, and yet doing absurdly normal amounts of weightlifting or exercise that requires no modifications to their already protein overloaded American diet.
Diet culture is what is fucking American health. People read fucking tabloids that bad-faith regurgitate poorly done "science", funded by the council for selling more food, and insist that since "Woman's Health" says that scientists say chocolate both kills and saves you, scientists are dumb and know nothing, even though THE ACTUAL SCIENCE NEVER CONCLUDED ANYTHING, because the scientific paper was just an observational study!