No argument here: Jony Ive has produced some of the best industrial design in the history of consumer products. He’s done it by cutting out all the extraneous parts. By eliminating edges, by smoothing and streamlining.
But what works beautifully for hardware does not work for software.
iOS feels like it’s following a trend called “flat” without really understanding what that means. The examples given in this article are telling – especially since there are enough examples of “flat” design that work just fine and do not have these problems; see Material Design, for instance, which, while flat, makes a lot of use of planes and depth and still makes it very clear what is clickable and what isn’t (mostly).