I find it nice that you've found a bug in my head... lol.
Anyway, on the topic: The point of pures is to deal damage. On the other hand they also receive a lot of damage. You can either block a dragon claw spec with temporarily protecting from melee, which reduces 40% of the incoming damage or face it like a man. Dragon claws are very expensive and therefore also show some power!
Dragon claws are not going to be nerfed. They hit nothing if somebody wears some armour.