You posted this on a public forum, so you have to expect to see different sides of the same argument.
Yes, and I do appreciate your opinions.
I DO think it is up to parents to set rules, but I also see the need to sometimes have functionality to enforce them. Kids are kids (and not fully grown adults with "perfect" reason and self control) and they test boundaries all the time, and that is fine, but sometimes they need a helping hand to control/monitor themselves.
I am not for a complete control of my kids and what they do online/gaming, but since I let them have a large amount of freedom I don't want to run around and nag about their gaming time... For me, this functionality that I exampled above, would be a easy way of letting them handle this themselves rather than having us as parents watching over their shoulders all the time.
The functionality would of course also benefit those suffering with a video game addiction...