Oh, absolutely. I know people who subsist on nothing but ice cream, pasta, chipotle, and orange juice while not gaining significant weight. They aren't ripped, but they aren't overweight either.
In the aggregate of society, the hyper-ectomorph phenotype isn't what people are fighting against. But, we must not forget about them either. Excessive school lunch programs of calorie restriction aimed towards stopping "fat kids" just pains the skinny kids who need way more calories than the 8 year old borderline diabetics.
We need individual nutrition knowledge balanced against our body type. We can't say "everybody must do X," but we should say "People with A, B, C traits should really do X and Y to not be a health menace to society."
