Earlier quoted context omitted.
Even then, individual screens is isolating. Collapsing in front of the TV with the family was still quality time enjoying something together.
For a lot of young people the screen is social - the equivalent of the long after-school phonecalls from the before times. Be it games or just Discord, it's still comms.
Observe young people using their phones, and you can see the social use is often just occasionally switching from TikTok to a chat app, dashing off a one-line message, and then going right back to TikTok. Big difference from having actual long phone conversations with friends after school.