You're ignoring his more important point that you will not be able to get the critical mass necessary to make it useful and true on a collective/societal level.

You're ignoring his more important point that you will not be able to get the critical mass necessary to make it useful and true on a collective/societal level. Believing that you can ask people to work less, and that the lost income (and subsequently access to critical resources like food) can somehow be supplemented with a garden that many people wouldn't even have access to the space necessary to implement, betrays a lack of understanding of the economic situation of most people. How many proles rent rather than own, and how may have access to fertile ground?