I think people are just sick of it. Everyone latched on to this light bleed thing for iPad 2, and in most cases it was just people being really really nitpicky. If you really look hard for flaws on an Apple product, you will find them. Best advice is to not look for them. If you find one and it's something you can't stand, take it to Apple.
But consider yourself warned that you don't want to go down that path. Once you inspect one and decide it's no good, no refurb (and yes, you WILL get a refurb) will be good enough for you either. Did it with my iPhone 4, did it with my iPad 2. My 3rd gen iPad went from its box directly to the back snap on cover. Put a screen protector on it right away, stuck the smart cover on there, and now I'm sitting and enjoying it, not looking for things I hate.