Citation needed
All reading is not inherently valuable, in the same way all television is not. I don't get any more socialisation from reading a book, and indeed unlike e.g. watching TV with housemates/family it's an entirely isolated non-social activity.
Now, if we're talking solely about _children_ then i will give the act of reading additional value due to reading comprehension being a key skill that they need to improve! But mine isn't getting any better at this point, certainly not by reading the same old trash I always do.
"TV bad, Books good" is just a weird generalisation that sticks in my craw and I've never seen a believable piece of evidence for it
Personally what he's doing would be hopelessly exhausting to me - I'm quite introvert and the level of social interaction he's engaging in is way above my tolerance level in terms of intensity.
It becomes even more damaging when the screen is your only window into the world. e.g. we work in front of a screen all day, then on the way home metro/train or whatever hold a phone to check up on social-media, then after dinner switch on the TV. No wonder so many (young!) people are isolated. (young is especially shocking. I'm old and it's normal for me to be alone. Guess men are terribly at socializing. But seeing so many kids end up lonely and isolated is pretty sad)