No I understand where you’re coming from, maybe I should’ve gone into a little more of the “why” and not just the how. My plan was just to give him a framework of guidelines he could use to get started today. I know that there’s not necessarily a need to blindly stick to certain foods, but the guidelines were more about what not to eat (for example, sticking to rice and potatoes automatically excludes all the processed shite that tends to make people fat in the first place).
But I do think you need to give the OP more credit. Just because he receives a diet plan which says to stick to certain foods, doesn’t necessarily mean he’ll develop some sort of neurosis over them. Everyone’s diet and exercise knowledge evolves; he just needed a starting point.