I disagree. Look at the MBP keyboard issues, or the declining quality of OS X.
Under Jobs that shit wouldn't fly. Other roles aside, one of Jobs' most important functions was that of acting as a sanity check to ensure that the constiuent parts of any given product came together as a cohesive whole.
Did you ever use the first 3 versions of OSX ? Because I did. And the quality was pretty unacceptable compared to OS9 or Windows. On the hardware side how long did Apple stick with the coffee puck mouse. Or how about the iPhone 1 never even having 3G or MMS or how about all of the issues with the GPU.
But yet Steve Jobs still shipped it all. Why ? Because his slogan was always "real artists ship".
But it’s getting easier and easier to skip a generation of laptop these days. My old machine is just starting to get slow enough that I notice. That’s a big problem for manufacturers.