I used to work around network security field. The same way I used to educate other people and my employees now. Limiting your home network is like closing a window and installing blinds next to two open windows. Devices now get Internet from more than one networks and many use own DNS services. You think you do good, but in fact you are losing the game fast. All your efforts are gone with one click on disable Wi-Fi. I want my family members to discover things by themselves and ask me questions when I'm still here to answer. It all starts with building trust by talking to kids like adults. I prefer to provide the answers and not some random classmate. As
@SomeWhereOverTheRainBow mentioned above - limitation with no explanation only increases curiosity. The results I have achieved so far is event-free home network for years, smart online and in person shopping, two kids in first 10 in school and university. No adblocker or parental controls since the age of 12. Yes, I've spend hours showing them what's good and bad online - on every network, not at home only.
Did someone ever asked you to block something?