This guy has his lines down and knows what he's pushing.

At the end of the video he uses the reasoning "if there was even one time paleo or keto failed us then we wouldn't be here". Which first off is immediately obviously false unless it failed the literally first few human beings (which again isn't how humans 'started').

Second off just because a diet hasn't failed (which someone smarter than me can inject the right word for success or failure tests) does not mean that it's optimized for humans.

I shouldn't start diet related arguments because diet is complex and a hot topic, but please don't just start eating meat only because this doctor says it's worked best for him.