… cul-de-sacs? Ok, they mean that as a metaphor and want to promote the New Urbanism, with stores in walkable distance and lots of light rail.
Our old place in South San Francisco was a bit like that. We could walk to Trader Joe’s, Costco, and there was a BART staion across the street. SF itself has excellent public transportation, is a walking city. However there are few if any big box stores because city ordinances ban them. I wasn’t sure that was a positive. Sure, it keeps the local quality of a neighborhood and allows small stores to thrive, but it’s also handy to be able to stock up on bulk items cheaply at Costco. If you have a multitude of small stores, then trucking items to them gets way more complicated, as well as carbon-producing, than having them shipped to a few big box stores.
But yes, being able to walk to stores and events is a huge plus. Too many suburban areas have nothing but houses, and you must drive, rather than walk, everything.