Ah - I think perhaps what I meant wasn't clear. Its not against design - its against Apple. The medium the attack is conducted in is design.
Also, because this is the internet and tone doesn't come through very well, my comment is meant to be a bit tongue in cheek. I think the idea that google wants to conduct eee against Apple using design is just a little too far fetched, though there may be a tiny grain of truth in there somewhere.
Presumably the end purpose of design is differentiation. Whatever Google is trying to do, Google has borrowed heavily on flat UIs other designers have been producing for some time. Rather than leading the pack, 'Material' is getting all of the stragglers to catch up. If all cars looked like Ferraris, Ferrari would change.