Did you read the article? Extremetech seems to believe that it's a flaw in the adonizing process:
"Schiller must be referring to the fact that anodization simply isn’t strong enough to withstand everyday use. We know this isn’t the case, though, as anodized aluminium is very well understood and used in a massive gamut of applications — including military, where the anodized coating certainly doesn’t just scratch off."
Also, from another extremetech article it links to: "Usually another protective layer of sealant or lacquer is added to make the it more wear-resistant — but sadly it seems like the iPhone 5 lacks that extra protection."
The iPhone 5's adonization seems to be more fragile than other adonized devices. <strikethrough>They've been coloring the iPods for years and nobody has complained this much.</strikethrough>
From personal experience, I have had an anodized aluminum computer case for over ten years, and in all my accessing and bumping into that case I have yet to scratch the coating.
"Schiller must be referring to the fact that anodization simply isn’t strong enough to withstand everyday use. We know this isn’t the case, though, as anodized aluminium is very well understood and used in a massive gamut of applications — including military, where the anodized coating certainly doesn’t just scratch off."
Also, from another extremetech article it links to: "Usually another protective layer of sealant or lacquer is added to make the it more wear-resistant — but sadly it seems like the iPhone 5 lacks that extra protection."
The iPhone 5's adonization seems to be more fragile than other adonized devices. <strikethrough>They've been coloring the iPods for years and nobody has complained this much.</strikethrough>