Lead increases crime, but does not explain the majority of the fall in crime observed in some countries in the 20th century. Additional explanations are needed.
It's not a question of isolating, it's because people only have a limited amount of time and energy and we're all forced to prioritize. Once you factor in romantic relationships, family and work/business many of us don't have much time left for regular meetings with friends.
What good did the increased face-to-face meeting do for previous generations?
From what I can tell Gen Z have lower teenage pregnancy rates, lower rates of alcoholism, lower rates of violent crime and are the most "educated" generation ever.
Doesn't that make it better, that we have an operating system unattached to any particular geographical area?