I have lived in “intentional communities” and attest that mature and self capable men and women of all ages can and do live excellently in compact (from [augmented] single home suburban dwellings of a dozen *or more) to ranch style configurations.
It is truly a new level of human excellence. The Epicurean garden of our age.
This has never worked without the WORK involved. People clean, people have a forum for regular discussion, people have responsibilities, and people come and go.
If you want a better life sometimes you have to game up with a better self.
* Once 20 in a single Venice Beach home (close enough to the beach.) there were old VW buses parked in the back yard and rooms with bunks, people paid $400-600/mo. It was wild yet it was civilized. Obviously city shut it down after years working well. It all comes down to good house rule and willful participation.