Well to be honest. There is no reason I can think of to be part of this peace treaty. In previous worlds people mutually left emerald city alone. But this is because they had high quality items and were a respected trader. Now Brodgar is a housing unit for casuals but it has the odd person who isn't a casual scrub.
Also yes an excuse to fight indeed. You are settled on the spawning grid or close by it. This means you are in prime territory for people to hunt you. No one wants to travel for a couple hours a day in one direction to pvp. So instead they go to the dense area which you just so happen to have grouped people up.