Haven't watched it, don't care to, nor will I watch the keto shows, the paleo shows, or whatever.
Knowledge
The issue with that philosophy is that it limits you knowledge on these diets. It eliminates you from any discussion on the Vegan, Ketogenic and Paleo Diet.
Secondly, you learn the upside and downside of each.
Part of the learning process involves learning what works and what doesn't work. In other words, you learn how implement and incorporate the strength of each and avoid the pitfalls.
Dr John Berardi On Intermittent Fasting
Berardi's PhD is in Nutrition. Berardi runs one of the largest online education nutrition services, Precision Nutrition.
Initially, Berardi didn't know anything about Intermittent Fasting and dismissed it.
However, Berardi realized that at some point his client would know more than he, as a nutritionist, did about Intermittent Fasting.
Berardi did his home work, which included reading the research and experimenting. Berari is now one the experts and advocates of it.
Berardi knows the various type of Intermittent Fasting Protocols; their strength and weaknesses and how to manipulate them for results.
A Great Line From A Dumb Movie
An old movie, I.Q., was a dumb comedy with a great oxymoron line.
"Believe everything you hear and nothing you hear."
The message is that no matter how dumb something sound it may be true but it should be question and investigated.
"I wouldn't get my education and my entertainment from the same place".
Cross Referencing
As your quote basically states, you need to cross referee information.
That amount to reading the positive and negative research on the topic.
The second part is gaining practical experience, first hand knowledge.
Practical Experience
As I have posted, one issue is when it come to implementing a diet, training protocol, etc. is that many individual often apply it incorrectly. They then blame the program rather than themselves; "Garbage in. Garbage out."
As I mentioned in a previous post on Complex Training, I got lucky and got it right, making huge gains in my Deadlift.
I then shifted to what I termed Advance Complex Training (what is termed as French Contrast Training).
My gains with Complex Training were erased with French Contrast Training. The bottom line was that I had incorrectly written and perform the program.
I rewrote the French Contrast Training program, getting right. I gain back what I had lost on my Deadlift and increase it even more.
Take Home Message
As Alwyn Cosgrove (Strength Coach) said, ...
"No one ever got dumbber by reading a book."
That applies to watching podcast, reading research articles, attending seminars, exchanging information on sites like this, etc.
Kenny Croxdale