Peer review is supposed to weed out the cranks and trolls.
Unfortunately, it sometimes doesn't work. Ask Alan Sokal (troll), Andrew Wakefield (liar and murderer by proxy), Diederik Stapel (liar), Jan Hendrik Schön (liar) or the other trolls, pranksters and liars that got through peer review without so much as a raised eyebrow from the reviewers or the editors.
So the actual problem is not the (lack of) repairability, it's how much time/money/effort you're willing to put into it. Then don't complain about repairability, complain about the additional time/effort/money to repair a Mac.
It's like saying natural gas cars are badly designed because there's CNG fuel station near you.
I quickly learned the hard way that all-in-ones are NOT user-serviceable. Power supply go bad? No, you can't slap another one in your tower, you get to lug your big iMac into an Apple Store, walk past all of the hipsters fondling their iDevices, and up to the "genius" bar and leave it there for a week
Seriously? http://www.ifixit.com/Device/iMac_Intel
I'm getting an SSD and upgrading my 2008 macbook pro to 10.8, I don't really see a need to buy a new computer.
You're glad to have be in before the lock - my '06 Powerbook G4 isn't. My 7-year old Powerbook, which cost $2k new, is getting less viable for everyday use by the minute. Time for a Debian PPC install, I guess...
Beware of Programmers who carry screwdrivers. -- Leonard Brandwein