Lots of the book is just "old man yells at cloud", even though Bradbury wasn't particularly old at the time. Not chronologically, anyway.
I do think he made a good point about porches. Places where you hang out and invite your neighbors to just come by. Houses aren't really made that way anymore; my house has a small concrete block out front that's barely enough to fit two chairs comfortably. Setback requirements in zoning mean it's legally impossible to add anything else, at least as the city zoning code stands right now.
There's a definite change in how my parents' generation interacts with people compared to my generation. It was more normal just to drop by and talk, though perhaps with a phone call to check in first. My friends would consider that weird.