sure, it's a copout. Others are saying that it's difficult for blizzard to send out a perfect product...or to even bring one to live. But that's a different issue alltogether. Saying that "it's scaled to level 85" implies that these numbers are intentional. Saying that blizzard can't be expected to put out a perfect product means the numbers were unintentional.
If blizzard knew how imbalanced some specs would turn out after 4.0.1, they'd have to be crazy to say to themselves "level 80 PvP is fine." And because they have complete control over the scaling process at every level (since they changed from the rank to a scaled system), they should be held accountable.
Blizzard just rushed out the patch...or were too lazy to address the scaling issues. But I don't think they were stupid enough to intend for level 80 play to be like this.