Most of the cheaper spanish-food staples (corn, rice, quinoa, beans, plantains) are also very high in carbohydrates which can lead to spikes in blood-sugar. And most "healthy-eating" plans advise limiting carb intake.

I didn't realize how sensitive I was to the blood-sugar spikes until I went on keto which strictly limits your carb intake. I no longer get the "sugar crash" 2-3 hours after eating. My grocery bills have gone up, primarily due to no longer being able to add filers like bread, rice, and grains which TFA calls "cheapened" food.

Ordering spanish (or really any) food without these fillers reveals how little "real" food most restaurants actually serve.