I believe that happens, but have you looked at it and seen the mechanism in action? Is there something else going on too? I'm really intersested in what people's direct evidence is.
I don't find that unusual at all. Doesn't that explain most social media - it's engineered for that excitement. Doesn't that explain HN?
It's not just middle schoolers. Our primate ancestors love to socialize; we've been doing it for seven million years. That's what social media sells. It's certainly not utilitarianism!
For this specific case, no of course I can't be sure, I don't know the specific neighbors.