the anabolic diet, or any cyclical keto diet incorporating high amounts of cholestrol will be a good diet for alot of bodybuilders who are nto using any drugs, because it will help them maintain good hormonal levels throughout the day, and week. the carb ups and refeeds are vital though, to help keep recovery ability, strength, and stamina up.
now, one could maintain good hormonal levels naturally in other ways. while the anabolic diet is a good diet, its not the only good diet. once baselines essential fat needs are met, its more beneficial to fill up the remaining calories in yoru diet with glucose, rather than put in any more fat.
all this assuming sufficient protein intake.