People keep saying well these are mature platforms, what do you expect?

16 Years after the Mac was unveiled, we got OS X
6 years after iOS, we got iOS 7 which totally reset the UI

Macintosh is now 40 years old. iPhone 17 years, iPad 14 years and watch, 10 years and it feels like we're about to lose a second decade of innovation where Apple just plays it safe and treats these decade old platforms like they can't be completely rebuilt from the ground up.