My favourite anecdote about linux's degradation is this: Earlier, applications like nautilus , cdburner etc would accurately predict and show the amount of time for operations like copy to complete. Moreover, copying stuff via the GUI was not significantly slower than command line.
With the latest versions of KDE (and even gnome), we've gone back to windows98 levels of inconsistencies (seeing the kde time-estimate bar during a file copy is just painful).
If you want a distro which doesnt take 1G of ram to run a filemanager, the latest one you can try is Ubuntu 7.04 - runs much faster on my 6 year old laptop (with 200MB ram) than my modern desktop (with 1G ram).
Patrick's emphasis on pragmatism & performance means that he simply wouldn't have incorporated stuff that didn't work if he could avoid it.
While the issues mentioned in the article are valid, it's still so much easier for me to maintain all family (and several friends) pc/laptops around, after I migrated them from Windows to Kubuntu/Xubuntu. The desktops just work and don't break, which is not something you can say about the Windows tamagotchi thing - you need to care about this one, or keep it restricted.
Also, 2-4 cores are standard these days. 8 - 24 cores would be high end.
1. Glorious design
2. Shitty first pass, released anyhow and made a standard
3. Laboriously fixing it over the period of years until it converges on "Slightly-but-only-slightly less sucky than what it replaced"
4. Goto 1
has become the standard operating procedure of the Linux desktop world.
I am not convinced that the Gnome and KDE projects are good organizational strategies. Replacing a lumbering behemoth accountable to its many customers with lumbering behemoths accountable to essentially nobody is not an improvement, no matter how "open" the latter may be.
(Oh, and I was happy only because I'm a professional programmer and I still prefer the command line over any "semantic desktop". I freely acknowledge this is not the common case.)
[1]: http://www.joelonsoftware.com/articles/fog0000000018.html