*"Well some people must simply have more time than me" 

• Does this philosophy apply to children playing in the street? Or to what books you allow them to read?

Of course simply as a human being you have to prioritize any risk-benifit potential.
But this idea that OTHERS have to comply to any of  "your" ethical or moral or safety standards is both impractical and unethical. Time management is not anyone elses problem but yours!
YOU've made the decision that semi-unrestricted parential control is fine for your children. What you have then said is you want ALL OTHERS to comply with your household rules.

By your logic extended the entire internet should be restricted to ONLY educationally-religiously  approved content.

(now he sits back awaiting the flood why I'm wrong, evil and fat  :)