Did the OP watch a different video? I saw no "furious". In fact, it looked pretty tame and pretty much a fail on the part of the trolls. Education is hardly comparable to economics and doing so actually works against the point they're trying to make.
First, "earned" is not limited to physical labor. If I win the Powerball, drop the majority into savings and earn more in interest than most people make working, I've still earned every penny, including the initial winnings. Secondly, there are no such things as implied favors. If you do something for me without my asking, I don't owe you anything. The notion that one "owes" society because without the infrastructure, etc, success wouldn't have been possible is not an argument for, well, anything. If I have a successful transport business, I don't owe road-builders (or society) anything. I pay taxes to use the roads. My "debt" ends there. If I've a successful internet business, I don't owe those who built that infrastructure (or society) anything. My "debt" ends at my hosting and ISP fees.