Our experience of Seattle, conservative hotbed that it is, is that everything is as described in the article. We've been discussing moving somewhere else for this exact reason. Doesn't matter if we would let our kid out if there's no one to play with.
Live in the Carolinas. All of the neighborhood kids play together outside every afternoon. The teenagers are all too busy to loiter around because they're so involved in sports.
Maybe it's yet another Berkeley bubble. Kids' independence is pretty much taken for granted here. Nobody would bat an eye at a 10-year-old wandering around in the grocery store. There's a playground at the marina that is built by and continually remodeled by children (there is some overall supervision there of course).
