Without Steve Jobs, Ive’s designs have been utter functional failures. Needed Steve Jobs brilliance and insight to make Ive’s designs truly shine and not just “impressive” on paper.
No.
Jobs' main contributions - to design - for both soft/hardware, have always been based around his personal opinion on what he believed people wanted - at the same time - as what he believed could distinguish Apple from "the rest".
His "brilliance" lied in his OCD and the wherewithal to sacrifice resources to achieve it. Ive absorbed those principles and qualities. That said...
One could easily point out that there were more "failures" during his more hands on years, then following when Ive/Federighi assumed the majority of the responsibility.
I could also easily argue that functionally, Apple has significantly increased it's dominance in the industries. I personally think they've done a brilliant job of balancing the exponential increase in available technology during the last decade. The later generation iMacs, Phones and Apple Watch are all still miles ahead of competition even as those competitors try to clone them.
I think that "getting used to" Apple's products have tainted expectations - go and work on a pc, or use a Google phone for a week and get back to me!
All that said, I stand by my comment and think that Ivy needed (and took) a break from device design when he started focusing on the Park - and that in order for Apple to continue dominating design in the coming decade, required a new chef.