Screen time for kids

My 7-year-old grandson was just here for a week. He spends all the time on a screen he is allowed to do. Of course, as grandma, I question whether this is good or not. Is it too much time? Is it educational? Why isn't he up and moving outside or doing something else? He watches a lot of YouTube videos and enjoys them immensely. At this point, he does have a lot of physical activity in the form of swimming, gymnastics, and outside activities when it is provided. I just wonder what he will be like as a teenager? I also wonder what technology will look like when he is a teenager. Lots to think about.