The problem lies in the reworked PvP and matchmaking. With the new win streak system, you're going to get a ton of glory very quickly. And then, you're going to be up against the players from the same rank level, but you are doing the quest and they are playing to win.
Sure some can complete it in 15 hours with 70% - 80% winrate in high glory PVP. But for the average player it can take 40, 60, 80 or an infinite number of hours and not very pleasant hours at that.