In which case the browser support and whole article is useless and nothing new for that kind of weird setup. Although I'd recommend being a responsible admin/p

In which case the browser support and whole article is useless and nothing new for that kind of weird setup. Although I'd recommend being a responsible admin/parent in that case instead and, with the _correct_ infrastructure for this scenario already in place, define filters for things you don't like or white lists for things that are okay for your network, instead of begging the internet to correctly guess your moral boundaries.