> I like that this family found a way to make do without any third place at all, just occupying the sidewalk and roadside. But I'm sure it would be a lot more comfortable if they had at least a shady patch of grass!

Exactly. This is a story about intentionality, which is required regardless of whether you're living in the suburb or the city. In the US, neither culture prioritizes spontaneous interaction by default, they're only different in the manner in which the isolation manifests.