Try that while raising a couple of children.
Exactly. How does this Neunomadic lifestyle last beyond a single generation?
It's great in theory when you're healthy, in your early 20's to early 30's, when you are independent and have no dependents, when you are living in a climate that is favorable, and when you're living in a city.
If any of those circumstances are not met you'll be either in a lot of trouble or you're most likely going to change.
Those that don't have the option to change we call street people.
And living off other people's couches and/or fridges and such does not make you an independent.
I can see a good reason for doing with 'less stuff', but this extreme is simply not realistic on anything but the smallest of scales.
It'd be tough if all your friends decided to do it tomorrow and you'd all want to sleep on each others' no longer existent couches...