But take parents example. What is it you want the app version to do that a decent website can’t do?
- Core Bluetooth
- Core NFC
- Periodic synchronization
- Background upload/download
- Background location tracking (in some cases, it's a plus, though)
- Nearby Interaction
- Anything USB
- No widgets
- No HomeKit integration
- No share extension
- No Live Activities or Dynamic Island content
The list is honestly too long.
To be clear, I do wish that Apple was less hostile towards PWAs and developers were better at making PWAs. Until recently, you couldn't even send a push notification from PWA.
Web 3D will never compete with native APIs in developer tooling, and hardware capabilities.
Now outside gaming, all CRUD apps could easily be mobile Web.