So it’d be nice if there was a system that actually looked out for children

Here’s the rub. Who’s version? Would your universal system protect just against gambling type things? How about sex stuff? Just porn or more? How much more? Should the system block anything related to questions or statements about homosexuality?

How about things that might be against a particular faith?

There’s no one set of rules that all parents can agree on as to what their children should or shouldn’t have access to. Until then, how can one system do what you’re asking?