I certainly agree in principle and am glad we don't have these measures.

OTOH I can understand why this might be a harder thing for parents than perhaps is acknowledged.

There are so many internet capable devices in households nowadays, including phones and games consoles etc. Sure you can try and implement some filtering but no system is bulletproof, especially when you consider P2P networks, anonymous proxies etc etc.

So I can understand the worries of parents who perhaps themselves barely understand the internet (likely their kids are much more savvy) themselves but want their children to have access to the internet as an education resource.

You might try and not allow any internet enabled device in bedrooms etc but then these days everything is an internet device and they will likely want to play games with always-on DRM etc.