Geolocation to that degree not that reliable and not necessarily 1:1 with jurisdiction or parental intent.
If we're already trusting a parental-locked device to report minor-status, then it's trivial to also have it identify what jurisdiction/ruleset exists, or some finer-grained model of what shouldn't work.
In either case, we have the problem of how to model things like "in the Flub province of the nation of Elbonia children below 150.5 months may not see media containing exposed ankles". OK, maybe not quite that bad, but the line needs to be drawn somewhere.
