Hmm indeed … I suppose I see their point … its like the one that was closed in the US bug report forum. Blizzard no longer see it as a bug, because the bug itself was fixed.
Here, they see it as no longer a customer support issue, because they have decided to give no customer support. Kinda proves my point above.
As far as Blizzard are concerned … you either suck it up and be aware that, at any time, your stuff in-game could just disappear (materials, reputation, achievements, collections like transmogs/pets/mounts) … even your characters, or you stop playing/find another game.