Personally it's less the item level (which can be completely arbitrary) and more the stat curve that I'm worried about.
Screenshots taken from WoWHead:
Since when are we supposed to have items with 250% more primary stat in less than a year of the expansion?
I guess DPS increasing by a ton isn't completely new (I remember ~2k DPS in Wrath Naxx, and then ~15k in ICC), it just feels bad that everything that's not bleeding edge content is only useful for warforges at this point.