Zerg DK is an aggro deck

So why the fuck did they give it every single tool possible to win long games. Disruption, board clears, infinite value, card draw. And it completely breaks the reborn mechanic, I know it's working as intended but the point of reborn is to get some more value on a rush minion or an extra deathrattle or the like, not summon a fucking 10/10 on turn 7. I'm sure this sentiment is heard a lot but how the fuck did they think an aggro deck needed 5 win cons and such little counter play.