I am a mathematician, and the Law of Large Numbers just says that if you roll a die many times, then the average of your rolls will converge to the expected value, in some strong way.
I think he is just applying Sturgeon's Law (90% of everything is crap), and then and then the law of large numbers to conclude that the average video is crappy.
I think he is just applying Sturgeon's Law (90% of everything is crap), and then and then the law of large numbers to conclude that the average video is crappy.