Parental controls aren't a good substitution for awareness, deep meaningful connection with your child, giving them a rich and fulfilling offline life, teaching them how to navigate dangers rather than isolating them from reality.

Hold on to your kids[1] and instead of having to spy on them you will know them.

Yes, Parental controls could, in theory, provide many many more protections. But given the trajectory of tech, capitalism, and the USA at large (and the culture it exports), I do not see that pragmatically happening to a relevant degree by the time I have children.

[1] - https://www.amazon.com/Hold-Your-Kids-Parents-Matter/dp/0375...