May be you are right. My understanding of Jobs way of thinking is "product/user" first. In the context of a Desktop user interaction is not touch oriented. User interface must give options with minimal cognitive overload. Translating iOS to Desktop is serving only the vertical integration of Apple.
Implementation is everything. I don't have any doubt that under Jobs the results of this process would be better.
Frankly, I think that the design changes Apple has been making are very much in line with how Jobs would have done things.
Would he have made it exactly the same? No, certainly not; he was a different person who was very opinionated, so there would be differences—but the direction of the changes would, I think, be very similar.
However, I think it's also pretty irrelevant, given that Jobs himself explicitly said "Don't try to do things the way I would do them. Just do the right things." (Paraphrased from memory.)