Purple Haze - no, sorry, don't agree with that at all. What you're seeing is a natural problem with most camera optics and there's examples of it in many other cameras, including some high end kit. Certainly both the S3 and Razr Maxx have both been shown to have the same 'problem'. If you're daft enough (or have no choice but) to point a camera directly at a strong light source in a dark environment bad things will happen to your photos. The exact colour may vary but haze / flare is to be expected in those conditions.
Casing - again, sorry, but this is massively overblown too. There's some manufacturing issues, true, and that sucks if you get a bad one. Will it scratch over time? Almost certainly but show me a mobile device that doesn't if you use it without a case. I've had mine on my all day, every day for the last three weeks since it came out with no case and there isn't a mark on it. Will it stay like that? No, of course not, and to expect it to is completely unrealistic. If you want your mobile phone (regardless of what it is) to stay in pristine condition put it in a case.
In short this is the usual nonsense that goes with any Apple product these days where forums like this end up overblowing any issue - real or not - to the point people get sucked in and believe it's the end of the world.
Having finished reading the Jobs bio yesterday, I know that Steve's view on things was very polarized -- everything was either best ever or worst ever, and nothing inbetween. Perhaps it's his influence that has resulted in the fact that anytime there are discussions like these about Apple products, it's either ridiculous to even suggest that the problem exists, or the problem is so severe that it's the equivalent of a natural disaster.
As with everything in life, the truth is usually somewhere inbetween. Was Antennagate a design blunder of epic proportions? No. Did other phones turn out to have similar 'death grip' problems? Yes. But it was more severe with iPhone 4 than with other phones, and Apple knew it -- they ended up not clear-coating the surface due to Ive's insistence (it was .00004% less pretty to look at).
Are devices from other manufacturers immune to scratches? Hell no, but Jony Ive has a tendency to get carried away with creating museum pieces and losing sight of the fact that the devices are mobile. Few devices have been more scratch-prone than the older iPods with chrome back and plastic front, there isn't one of those iPods in existence today that doesn't look like all NHL teams used the chrome back for skating practice. Ive experiments a lot and it's hit and miss (*cough* Cube *ahem*). My '09 MBP and my iPhone 4 have held up amazingly well without any protection, they look brand new. But I'll never forget the first time I wiped fingerprints off my shiny new 1st gen iPod Nano and it got scratched up by the cotton fibers of a soft, clean cloth.
Purple haze -- yes, all cameras big and small have their flare issues, and yes, it's a dumb idea to point a camera straight at a strong light source. But this particular camera's quirk stands out as more destructive than average. DP Review concluded as much: "
All lenses are susceptible to lens flare to some degree [...] But in our shooting we've found that it's a little more noticeable on the iPhone 5". Just like the iPhone 4's antenna... not an Apple-only issue but more severe than the average.
So, is it unfair to make a big deal about issues with Apple products in cases where it's just a little worse than the average? IMO yes, for the simple reason that we're arguably dealing with the least modest company in the world. Everything they release is "THE bestest evvar in the history of the universe!!!". It's not merely great, it's utter perfection, it's "magical", it's 50 years ahead of the pack, it toasts the competition, blasts it to smithereens with a laser cannon, and dances all over its graveyard. And the products are priced accordingly. Therefore, Apple deserves the pickiest and most anal customer base in the world, with ridiculous expectations and entitlement up to their ears. The company asked for it. They signed away their right to play the "nodoby's perfect" card long ago.