They are both very dogmatic in there view of diets.Keto diets are very healthy.If you feel unsure about them just don't do them, but these are both very poorly done videos that show no proof of anything.

I'd like to see these “studies” this guy mentions. Anytime someone tries to say eating low fat with high carb is better hardly ever shows their references. I would be surprised if this guy showed his studies. It's a well known fact that tumors can only feed on glucose/sugars (i.e. Carbs) so Id like to see that proof that a person didn't just claim to be on a Ketogenic diet that had colon cancer or decided to go on one when they found out they had cancer but the doctor used this information to say it was the cause. Sure there's a 99% recommendation against it but it's doctors that follow the dietary guidelines since they don't do research and only follow what the medical board tells them to do in administering medicine. I haven't found any dietary researchers that say low carb or ketogenic diets are bad at all. Dr. Bill Lagakos came to the conclusion that low carb diets are superior to all others based on research alone. This is totally unbiased because he started out from scratch looking for the truth. If you look on http://www.caloriesproper.com you will see his post that only talk about research. He doesn't have anything that's not cited.

They are two talking heads on youtube.  Nobody serious about making any sort of argument will make a youtube video about it.