apple's highly opinionated developer strategy has a strength here insofar as they could use it to deconstruct existing apps into generative ui programs that the user may compose to their needs (e.g. putting a webview for cooking instructions above a timer) though of course app publishers would decry it, Apple's never really seemed keen on listening to them.
The home and widgets screen can be customized to the point you don't recognize it as iOS
> devs customize the UI
Have you used Spotify? It completely ignores Apple UI and does its own thing cross platform. If you mean let devs customize the OS' UI, why would they? UI consistency is one of Apple's core strengths (or so it was before the 26 releases).
