> - It's not possible to set screen time restrictions for Safari.

I thought this too. I discovered it actually is possible though, just doesn't appear in the list. Go "Screen Time" -> "App Limits" -> "Add Limit". In the "Choose Apps" dialog, you won't see Safari in the list. But you can type "Safari" in the search bar and it'll appear.

But I agree with the overall sentiment on this thread. iOS Parental Controls aren't where they need to be.