Access to educational material, communicating with friends and family, fun.

There huge benefits to being able to look things up, download books, talk to friends and family even if they live on another continent, playing chess or D & D online.

I think social media is net harmful (to adults too) but devices, games etc. are not bad per se.

Then you also take on the risk that brings for your childrens health and well-being. Its not a problem for the government to solve for you.

I agree. I know my kids and can judge what is right for them better than rigid age rules. My point is that there are benefits to balance against the harms.

Why do people let tweens wander a mall unattended when there are things like brewery/restaurants inside? Because it's illegal to serve them alcohol and as a social convention you know they won't.

Society works a lot better when we make the few bad actors that are out to exploit children stop, and instead expect everyone to look out for them/generally behave in prosocial ways. Things stop working when we say "why wouldn't you assume everyone around you is out to harm your kids and act accordingly?"

We can just say "actually you're not allowed to put gambling in a game targeting 7 year olds".