What if he would like to have optimal hormone levels but get more of his calories from carbs than fat? Keto style food just doesn't taste very good to some people. I prefer potatoes and noodles over oil,peanuts,avacado, etc. so the key is to find the point where you get optimal levels and still not have to eat greasy 85% beef .
The diet is a pie chart. to give more calories to fat would mean less calories would come from carbs. Some people prefer foods with more carbs and less fat, based on taste among other things.
Taste is one thing, performance is another. And personally, I love fatty ground beef.
In a caloric excess (bulking diet) keep fats around 25% or higher.
In a caloric deficit (cutting diet) keep fats around 35% or higher.
Avoid polyunsaturated fats originating from plant sources. These will wreak havoc on your body (inflammation, insulin resistance, etc.)
Consume monounsaturated fats.
Polyunsats from fish/free range animals are ok (as this is where you get your omega-3's).
Saturated fats from fish, animal, and coconuts are important for optimal hormone production.
Br