Always_Ask_Questions,
“Also important what is the trade off between. I believe (meaning read something, but did not check) that there is a general decline in teenage crime & pregnancies attributed to teens spending times on the phone instead of in malls & gangs.”
Another false equivalence. There’d be an even bigger decline in teenage crime and pregnancy if humans went extinct. Also, correlation does not necessarily mean causation. Violent crime among youth skyrocketed in the 1980s and early 1990s, but started declining in the late 1990s, well before the first iPhone was introduced.