Not sure why this sensible comment is being downvoted. The living room used to be a place for a family to congregate and spend time together doing shared activities. If everyone is on their own device… there is no opportunity for quality time and shared connection.
I think it's because two tvs on a wall tell you nothing about the way people spend the rest of their time away from the TV.
The living room hasn't changed. Instead of one person reading and one person on the TV; or one person doing crafts while another reads; two people are on two TVs. Why the moral panic?
Only so much as a pair of chairs for two family members to each sit and read a book in or a pair of bicycles for two family members to each ride is a step in the wrong direction.