I watched the video and another of his on income tax. It's extremely questionable that income tax law would only apply to foreigners by the letter of the law.
If we assume thats true anyway, how would you go about applying it? Not report taxes? In that case would you then cite all these laws in an audit and then go to court and get pummled by the system?
I think that's why it's not catching on, I'm curious what you think.