A fraction of the money poured into these mass surveillance systems and proposals would have gone a long way in developing better parental control software.

If startups build parental control it carries the wrong incentives.

Realistically what's needed for proper parental control.

1. Software that parents can install on phones, and computers (which comes as an upside of less lockdown on devices)

2. A way to whitelist websites and applications (particularly for phones).

3. A way to share, reuse and collaborate on whitelists. No enforcement of a central authority.