I agree with him that social media could be very distracting, especially in the family settings, but, I get a ton of useful information and stay up-to-date with the latest research through Twitter, Reddit and HN. Cutting those out would mean putting an iron curtain on the latest insight and recent developments, and, essentially, quitting the front line.
I think I am observing it being destructive in a family setting. I fear for what this will bring in 20 years.
As Socrates's says “The children now love luxury. They have bad manners, contempt for authority; they show disrespect for elders and love chatter in place of exercise.”
Not mention the shocking depravity of shaving and painting statues blue