You should probably reread your own quote, and show the entirety:
So as Blizzard plainly states, these are not scams. As for the moral implication, Blizzard isn’t even saying people lack morals. Merely posting on the AH, which is all you can point to, is not the problem. If, and only if, someone decides to tell you that they intend to scalp you can you start putting moral failings on that person.
Otherwise the 1s bid, 1,000g buyout single piece of Runecloth is entirely devoid of morality and is not a scam.