[dogmatism]

answer: adblocking in the browser (and other data scavenging which can be done with native app more easily than PWA)

[raw_anon_1111]

What “data scavenging” can be done with an iOS app without the user explicitly giving the app permission?

[epistasis]

User permission has little to do with it. Every input box has an error rate. If 1%-5% make the wrong choice, there is your data.

That's why people make apps that collect things even none of the users want them to. And if you can justify the permission box with some actual functionality, then it just increases the 1% to a far higher conversion rate.

[raw_anon_1111]

And every permission available in apps there is probably a web standard for it…

There are literally dozens of ways to track web users that are not available in apps without explicit user permission