I don't understand how commission based realtors exist nowadays. They primarily provided value in the past by being the sole network between sellers/buyers. That monopoly doesn't exist anymore, so it doesn't make sense for them to demand a huge commission. I personally look forward to companies like Zillow disrupting this archaic system.
Also, the high prices for real estate make sense right now. Millennials are well past settling-down age in combination with a flight from inner cities that are becoming crime-ridden ratholes. (Just look up how many shootings occurred in Chicago this past weekend if you don't believe me.) I wouldn't be surprised if this guy had a "10 Reasons Real-Estate is a Terrible Investment" video a few years ago when prices were cheap.