Or you know, you can let parents take care of their own kids. Stop telling me how to parent my own kids in my own house!
Also obligatory reminder, consumer home routers have had parental controls for years. You can use these functions to whitelist specific websites for your children, while simultaneously block everything not on said whitelist.
On top of this, this is the most privacy respectful option as it means no third party is snooping on what sites your visiting, no one is collecting analytics, and no personal information is made available to said third parties to be hacked and compromised, ultimately protecting you from any identity theft.