My personal experience is that following this has made me far more effective in following diets of my choosing, and has improved my body composition consistently. I have personally come across hundreds of people who have very likely followed this with exceptional results. I believe with certitude that it is effective, but I acknowledge that relatively high barriers to entry and selection for positive cases influences my experience.

PRE-APPROVAL EDIT: It should be noted that while my post should have a persuasive effect, I didn't write it as an argument because of a lack of novel evidence/reasoning. My aim is specifically to get discussion of this on LessWrong because it may be a blind spot, not to explain or reason something.