I think people are heavily biased towards what looks interesting to an outside observer. A child sat at a desk all day starting at a glowing screen looks like some kind of soulless zombie.

"Screens bad! Go outside and play!"

The child might be doing something mindless, or might be involved in something fascinating - creating or participating in elaborate and vibrant virtual worlds.

I think parents should seek a healthy balance for their children. But that means understanding what's happening and what it means and not trying to promote activities because of how they look on the outside. A child riding his bike around the neighborhood probably looks better to modern sensibilities than one staring at a screen, but I don't know why bike riding should be considered superior to building a world in Minecraft as an example.