As a cultural thing, that type of community behavior has likely been going on for most of the past century in NYC.
But the person in the article tries to create that in a place where there is no cultural proclivity to that kind of behavior. That's actually a far more difficult thing to do.
Still, it is awesome to have it just as a cultural practice. No question.
My block and many of the surrounding ones in the neighborhood have block associations that organize events like block parties, clean ups, stoop sales, holiday events, backyard garden tours, workshops etc, as well as being able to advocate for the block's collective interest as a legal entity.