Good call. Brad however said blobbing was a part of the game. So I doubt that blob nerfing will happen.
Anything that is in a game is actually a part of the game, blobbing is the same at least since you are allowed to bunch up units an move them altogether.
BUT... (and that is a huge "but"...)
Blobbing needs to have reasonable counter-play and not give tremendous benefits otherwise certain aspects of the game are practically rendered useless since their importance diminishes.