You assume I'm just a web surfer because I don't care about the issues. Wrong. I use Photoshop, Final Cut Express, Dreamweaver, etc. all the time. Seeing things properly is very important in what I do.
But the thing is, they're subtle. People over-exaggerate they're problems for exactly the reason you stated. It's a $2000 computer and they expect it to be flawless. Well welcome to reality; things aren't.
A lot of the problems are things people could easily live with.
As I've said, I've had my iMac for 10 months, using Photoshop, Final Cut and other creative tools all this time. Not ONCE have I found myself being hindered by a screen problem. I only notice the "blotchy" backlighting when I look at my screen from an angle. Not a slight angle, in fact, but looking almost sideways at the computer at night on a full black screen.
Now yes, some people DO have legitimate problems that do interfere with their work. I had a stuck pixel once (which I got rid of easily) and while it wasn't in the way, it was annoying and put me off. But the thing is, a LOT of people are being nit-picky about things that would barely affect them in the long run, and complaining on the day they bought the damn machine.
If there is a serious,
genuine issue, Apple WILL REPLACE THE COMPUTER. There is nothing to worry about when buying an iMac.
I have what appears to be these so-called "issues" and I'm saying that they've over-exaggerated and barely noticeable.
P.S. While I agree that the iMac isn't really a web surfer's computer...
http://www.apple.com/imac/software/
Apple may not thinks so. I mean, they have a whole section on iLife for crying out loud. How many non-"web surfers" do you think care that much about iLife? Like it or not, the iMac is more of a consumer-aimed computer.