[miohtama]

You do not need stop VPN or have age verification websites. You can just lock down Android/iOS/Edge against a blacklist of porn sites. Many providers are selling this as a service.

But it would be up to the parents to do this.

[closewith]

You can say the same thing about alcohol, nicotine, driving, etc. As a society, we can decide that you cannot provide certain products and services to children and we can make that provision a crime.