[blackpill0w]

Not a parent but I want to give my opinion anyway (I'm in my early 20s), my parents allowed me to use devices with minimal management; I can use them only after I finish homework (I used to do them right after I come from school as a workaround though :), I can't use them while eating and before sleep. I might have been using them for an unhealthy, but still acceptable, amount of time, not by today's standards though, times change.

The most important thing is who you surround your child with, if all their friends spend their day on their phones, your son will probably try to do the same thing, however, as my friends used to spend time playing outside, I did the same. So not only your rules that matter, but also the environment.

Another thing to be aware of is that the internet changed, I grew up with flash games, a fun little way to kill time when you're bored, nowadays short-form video content is taking over, ads are everywhere and political ideologies are injected into everything, so one should be more careful of what kids are watching.