1st, I never take diet or fitness advice from someone who doesn't have an aspirational physique (natural and athletic, of course)

2nd, all these "experts" always seem to add an exception or a personal "indulgence" to fit their narrative...

Sorry, these guys may have some good advice or points you can use in your own personal life, but none of what they claim, regardless of their "PhD" credentials, I would ever take as gospel...