Your managed network sounds like malware. It intercepts, hijacks, records, blocks, etc. -- and all without the need for the user's continuous permission and knowledge.
Anyway, the "head of the household" should get out of 1920 and find out about talking to your family like a person and using standard parental controls as validation, not weird policing. If you make your home a battle, people will find the stuff they want elsewhere and not talk to you about it if they have questions.