So what if Allies turn war mode on just to do the quest and then turn is off? It’s still more Alliance players available for you to complete your weekly PvP quest than before. What else do you want? Do you want them to play only at specific times of the day? Do you want them to be in only groups of 5? Do you want them to have only specific team comps? Have specific transmogs? Eat specific cereal? Use specific toothpaste?
Blizzard did you a favor by giving you a slew of targets to kill. So, quit your elitist posturing and whining about the kind of players Allies who are incentivized by the exclusive world quest are and go kill them!