I agree that dietary research needs to continue but I think the back and forth about what to eat (saturated vs non saturated, no salt vs salt ok etc) needs to slow down. I think the best advice is that by Michael Pollan "Eat food, not too much, mostly plants."
https://health.gov/dietaryguidelines/2015/guidelines/
Yes, the food pyramid is dead, and there are other changes that come and go through the years. The issue is that "eat your veggies" is so boring it won't make any news.
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> A healthy eating pattern includes:[1]
> A variety of vegetables from all of the subgroups—dark green, red and orange, legumes (beans and peas), starchy, and other
> Fruits, especially whole fruits
> Grains, at least half of which are whole grains
> Fat-free or low-fat dairy, including milk, yogurt, cheese, and/or fortified soy beverages
> A variety of protein foods, including seafood, lean meats and poultry, eggs, legumes (beans and peas), and nuts, seeds, and soy products
> Oils
> A healthy eating pattern limits:
> Saturated fats and trans fats, added sugars, and sodium
Dark Green is "Spinach / Kale", red/orange is carrots and tomatoes, starchy is corn or potatoes. There are also survey results in how well the US Population overall is doing. USA doesn't eat enough veggies, and eats too much refined grains (white bread). The typical American needs to reduce refined grains, increase whole-grains, increase veggies, and increase fruits in their diet.
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EDIT: Can someone explain why I've gotten a lot of downvotes? I'm genuinely curious. I don't think I've said anything close to controversial here.