There are many counter-examples, from the original iMac’s mouse to the iPod Hifi. Jobs said no a lot, and that was a good thing, but he did not have absolute good taste. To his credit, he was good at learning from mistakes, even though he very rarely acknowledged them in public.

Don’t have to get every single one right to still play the role. The man was effective, not infallible.

But then it works both ways: you cannot cite a couple of failures under Cook to say that Jobs was irreplaceable.

You seem to be debating someone else; I haven't said that?

I think Jobs and Ive were a pair that complimented each other. I think when Jobs died, Ive lost that moderating influence, and "thin at the cost of good" and "we got rid of buttons" were the result for a while.

On the other hand, Ive without Jobs got you iOS 7 with all the fine Corinthian leather removed.