I love when the Food Pyramid and MyPlate are brought up as arguments on why Americans are unhealthy these days.

National estimates suggest only 8%-14% of Americans ever followed MyPlate. https://pubmed.ncbi.nlm.nih.gov/40752889/

Also, MyPlate only used "grains" as a category, with a note to make half from whole grains...not just processed carbs. Big difference. And, vegetables are the biggest category.

Adding on to that, if you workout in ANY capacity, you need simple carbs.