Mostly its a matter of making sure he runs around, and doesn't just sit on the floor staring at a screen. I mean sure they go outside for a few hours a day at school, but I expect children to be "active" in whatever way they enjoy.
Later if he has interest I'm sure I could talk to him about coding, but I know he's seen me do enough that he'll not consider it bad..
(It has to be said that a lot of people who talk about bad content are also saying they don't trust that youtube, and apps, will have appropriate content. And a lot of the time kids want to play with phones and the internet they want to do it alone..)
Physical activity and exercise is a good point and I think it's safe to say that exercise is a good, or at worst, a neutral pastime for kids. Probably good, as it would be for adults as well.
What about getting them involved in a physical hobby like a sport, and not restricting screen time? Would that be more beneficial for the kid?
As a dad also in Finland who has a child around the same age... I think I struggle with this wrt my son because I am honestly ambivalent. There is part of me that feels as you do. "Why not? He's active, popular, does sports, spends time with friends, is doing well in school, even has a girlfriend." On the other hand, I know that he would happily give that all up to play Zelda endlessly. When he's not on the screen at home he is restless and bored, which is a conundrum.
Later if he has interest I'm sure I could talk to him about coding, but I know he's seen me do enough that he'll not consider it bad..
(It has to be said that a lot of people who talk about bad content are also saying they don't trust that youtube, and apps, will have appropriate content. And a lot of the time kids want to play with phones and the internet they want to do it alone..)