A very similar development is going on in neighboring Finland. There are schools that use almost exclusively paper books (instead of digital ones) again. The overall consensus among parents is that books are way better than screens for kids, all the way up to high school. Hand-writing and free drawing with pen and paper provide many advantages to fixed screens. You cannot open a new tab to Youtube in a book. The sign…
The main problem mentioned in the article you link to seem to be distraction from what they were supposed to be doing.
Distraction is not always bad and kids can learn a lot by being distracted by something that catches their interest. it depends on the approach and its more of a problem following a fixed curriculum in a classroom. Probably more of a problem for uninterested or younger children.
I think video can be a big problem, particularly given the tendency of sites to try to keep you there.