I think the general idea is great, although the idea of devolving authority to individuals is essentially arguing for very limited government which is a conservative idea. The liberals want to order society according to their own vision, and use everyone else's tax dollars to do it.
Where I think he has a more practical point is in at least devolving governmental power to lower levels. In other words, people who want to live in leftist urban enclaves can do so, while the rest of us can choose to live elsewhere with much less government.
Except the reality is that is already our system. We have separate levels of government, and if the left was willing to abide by that, they'd do so. But they aren't. The urban leftists want to dictate policies and beliefs to everyone in the country -- it's inherent in their ideology.