I had a similar experienced as a kid in the 2000s, though not quite as strict as yours. My group of school friends would talk in person at school and then hop

I had a similar experienced as a kid in the 2000s, though not quite as strict as yours. My group of school friends would talk in person at school and then hop on a Call of Duty lobby when they got home, or chat on Facebook/SMS. Without internet or a cell phone, I was only present for a small portion of the their conversations and activities. Someone might post something funny or shocking on Facebook and everyone would be talking about it at school the next day. Sometimes people would continue a conversation that had started online the night before, and I had to either sit quietly or ask someone to fill me in (with mixed results). The result of all this is that I never quite formed bonds with that group, I was always on the periphery, the guy who hung out with them at school. I assume all of that is more intense today than it was circa 2010. The "keep your kids off social media" advice only works if a lot of other parents do the same, and if you live in an area where kids can easily visit each other in person.