Without getting into the person's reasons for prepping or planning for survival, he does bring up an important, and often not addressed, survival necessity.

We all think we understand people, we deal with them every day, right? While the video makes some points about types of people you would not want to "let in" to your prepping or survival groups, it does not address how you make accurate assessments of people. Very few survival oriented sources address this subject at all. I will throw it out there that learning how to more effectively deal with people, especially people in stressful situations, is a key survival skill. Experience with people does help, but you must learn the correct lessons from those experiences.

KEY PEOPLE SKILLS (not a comprehensive list)

Assessing threat (and reducing threats short of violence)

Communication (all aspects)

Leadership

Dealing with Stress and other mental health problems

Deep Survival

This book does a good job of helping to understand some of the issues. It is not a "how to" book, however. There is some good training out there, but it is usually expensive. There are some very good books on the subject, if people take the time to read and understand them.