Nothing " hardcore" about clearing trash that literally give you nothing at all for your time. Unless you choose to beleive thats hardcore. But thats YOUR belief. Personally I just find it pointless.
EDIT: Lol at " Go play WoW. " I bet you weren't around for vanilla WoW were you? Them 10 man UBRS runs were you had to CC 4 - 5 mobs and have people keep CCing, boss kite tactics for end bosses, etc. DPS actually sat around and waited before dpsing packs for the 2 - 3 sunders. Was a whole lot more annoying that herding cats here in Duty Finder.