I'm not a designer, but wasn't Jony Ive largely responsible for leading many of the great designs at Apple, including the iPhone? Or do you think he's stagnated, or perhaps is unfit in his current managerial role, or something else?
That doesn't make them bad, but Ive seems to take mostly the look not the design philosophy. Meanwhile he pursues the cult of thinness.
Partially unsuited to his current role and surrounded by yes-men who play to his worse instincts, and partially in that he used to have several powerful counterweights that are no longer present on Apple's exec team to challenge him.
Steve Jobs was the tastemaker. Without Steve's input Jony is apparently not able to produce insanely great designs.