Earlier quoted context omitted.
> if we're willing to shift these costs and responsibility to ISPs, which could separate the internet into two networks, one for children and the other for the rest of us. This is technically just as feasible, and probably cheaper than requiring every website to process It really wouldn't be. Do that at OSI layer 3, every routed packet would have to have an "was this sent by a kid's device" flag. Higher levels aren't…
> Lower levels, you'd need duplicate hardware specifically for kids, which couldn't connect to the adult's internet. This would also breed more interest in hardware modifications and thus leading more kids into the technical field. Sounds like a win win situation.
Such things can't run modern websites either.