I'm not sure the other commenters claiming all these features are attack vectors actually read the list?

How is the barcode detection API a security risk for example? Having it implemented would be amazing for web apps.

Also there's features like deep linking into PWAs that ought to be pretty basic PWA functionality that's not on this list that even Safari on Mac OSX has but Safari on iOS doesn't. Even the add to home screen menu option is deliberately made hard to find.

Apple doing this for the benefit of the user is one of the less likely hypotheses.