It doesn't sound a whole lot different than my current living situation or former living situations. I currently rent a bedroom in a 3 bedroom apartment with 3 other people, share a shower with one roommate, and keep 99% of my possessions in my room because my roommates like to party and I don't want stuff stolen or broken. It's not a great situation for dating or being social and I have to be extremely efficient with space, but the room works well as an affordable place to crash after work.
The risks really seem to come in if you use this model to serve the poor. But as a solution for graduates jumping into their middle-income city gig I think it’s brilliant and a healthy shift away from our culture’s obsessive individualism.
So pay for a place to live and all your regular social responsibilities like cleanliness and paying for services on time are just taken care of...? That doesn't seem like a great way to transition into adulthood at all.