I think I am at a loss as to the design goal of this quest. It seems that since online gaming is in the entertainment industry, something like the capstone quest to an entire expansion pack would have "entertainment" as part of the design goal.
However, all I personally get out of my runs of this quest is "frustration and annoyance". It sounds like many who are posting feel the same way. From the player perspective, the quest certainly appears designed simply with this purpose (to be as frustrating for players as possible). The aspects of the quest chosen to be challenging are just hurtful and somewhat mean-spirited toward the playerbase.
The amalgamation of almost every encounter/situation in the game that players rate as low in entertainment value, is just really not the way to achieve a challenging and entertaining quest. It should not be suprising to see such backlash.