The price of a Safari user in the ad market is going down, and it’s exactly what should be happening. I’m very happy with Apple.
https://9to5mac.com/2019/12/09/apple-safari-privacy-feature-...
You can implement these APIs while at the same time requiring explicit permission from the user before a web application can use them. This preserves privacy while also giving users the option to have much more powerful web applications.
Apple doesn't want to implement these APIs because currently if you want access to these things on iOS, you need to go through their walled garden App Store, where they get a big chunk of any revenue you might make on such a service and can nerf competitors and all the other anti-competitive stuff they're doing.
Isn't App store apps (Not reserved to Apple's one, this also works for Google, Microsoft and many others) untrusted code too? It runs with even more privileges than your browser's code and have access to more fingerprinting information if that's what it is going to do.
As far as I see it, a PWA with these permissions has less privacy risks than a native application I can find on a store. I'd really like to understand how installing an app is not an issue but having the access from the browser is. Is it simply the permission framework that is broken and you don't trust it to not leak information when the API is disabled?
Apple puts every submitted application through an enormous battery of automated (and sometimes manual) tests and disassembly to look for malicious or non-permitted behavior before publishing apps to the App Store. They don't have that ability with random websites.