The article in general is pretty good, but this is off: > The Macintosh’s operating system was showing its age, especially compared to Microsoft’s Windows 95. I don't think that there was ever a point where Systems 7, 8 or 9 were worse than Windows 95.
System 9 still lacked preemptive multitasking, due to a pragmatic decision from the very beginning of MacOS. (Perhaps even predating the Mac?) That alone would be enough to say that it was showing its age. As someone who was using System 9 at the time, I would say that this is indeed what knowledgeable users were thinking.
They had made a LOT of work on that, and the driver model by the time System 9 arrived. What really failed on Copland was the 'userland' equivalent. At the time, Apple had gone into a completely bizarre way of designing complex APIs for everything and most of them had no use whatsoever. There were heaps of crap, like OpenDoc and many others and Copland was 'trying' (and failing miserably) to integrate all of that.
How do I know? I have a collector t-shirt with 'Copland Driver Kitchen' on it ;-)