I think the intent was that people on your team would feed berries to allied gyms (at least to pokemon they thought had any place defending). Right now it seems like the dominant team is dominating areas more than ever, but we'll need to see if that continues to be the case as the novelty wears off (and berry stashes run out).
You probably shouldn't joke about PTSD - it's a real condition that can be debilitating for sufferers.
