Apple declined to implement 16 Web APIs in Safari due to privacy concerns

Those APIs should not exist. Web site creators need to stop acting like they are entitled to access whatever they want on someone's computer.

I dont care about your unique SaS usecase, these are invasive. Make a native app if that's what you need.

Why is accessing this via a native app better than accessing it via web browser?

Creating these APIs doesn't just grant access to them to well-thought-out PWAs with a clear use case.

It grants access to every shady malware ad that wants to siphon your data and that of everyone around you.

To what degree is this true for App store apps too though? What with the Facebook (sign-in) SDK and all? Honest question.

With app store apps I am told what permissions they need and I usually opt to not install them, but it's hard to get by without a web browser these days.