If you factor in cost: a diet based around beans and greens is much more nutrient dense per dollar spent. That diet also doesn't add a bunch of refined carbohydrates, which I agree are to be strongly avoided.
Discussion
Beans and greens lack essential amino acids and cholesterol.
I spend on average about $80-100 a week on groceries for just myself, but it's hard to put a price on good health.
The amino acids point is false and our bodies produce cholesterol from fatty acids. It's trivially easy to get enough of each essential amino acid with a balanced diet of beans and vegetables.
