How does that work in practice? I've tried to do this at home. It doesn't work at all. It's not the 90s any more- there isn't one PC sitting on a desk with a modem attached to a phone line that you need to wait for 30 seconds to dial up and establish a connection before you're online...

Now you have ubiquitous WiFi and cellular connectivity across dozens of devices in a typical household. Even refrigerators have built in web browsers now. Parental controls are a joke, treated as an afterthought at best - nonexistent at worst. Oh, and the school system provides your kids with a Chromebook with Internet access starting in elementary school.

It's victim blaming at its finest IMO. Yeah, we can all point fingers at the parents who sit their kids down with an iPad. But there's many of us who struggle to limit screen time, working against the profit motive of trillions of dollars of corporations. It's a losing battle.

Edit: crazy. Instead of providing an answer to my question of "how do you do this in practice" I get downvoted. Goes to show that there are no real solutions, just a bunch of morality police and victim blaming. Yes, parents are the victims here. The tools are inadequate and trillions of dollars of incentives are lined up against them.