Everyone who has commented on this thread has done so on a screen of some sort, and presumably gets something out of belonging to a community such as Gransnet.
Children are just the same - they like to be part of something, and when they aren't able to play with friends at least they can stay in touch online. Do people discourage them from using Skype, Zoom, FaceTime whatever to stay in touch with grandparents? Why is that different?
I agree with the point about having to google everything, but in my experience adults are far worse offenders where this is concerned. I commented on the nosy neighbour thread about people I know who google everything, even during a (telephone) conversation they are checking on what is being said and getting a 'step ahead', rather than listening. They are over 60s, not children.
I think that screens are now a fact of life, and expecting to change that is a bit pointless, really.
Personally, I draw the line (with children and adults) when people are in the room/restaurant talking to others but still on their phones. I just stop talking and wait for them to stop texting or whatever they are doing, then start again.
Otherwise, if a child picks up a gadget to play with, I just see it as I would any other toy.