Story time

[Seraphor]

Tank was in the right here. As a tank main, people expect me to be able to do mass pulls efficiently and effectively to finish the duty in a timely manner. When I do my roulettes as my WHM it's the same. People want fast and efficient (the term time is money comes to mind). The whm in your case should have adjusted or at least dealt with it to better themselves because 9.9/10 times, pulls will be like this in any roulette (except trials obv.).

Part of doing efficient mass pulls as a DRK, is being in Grit.
It's not like PLD where Sword oath trumps Shield oath in every conceivable situation.
Grit is integral to effective mass pulls, as Delirium'd Blood Price will sustain your DA-Abyssal Drain/Quietus spam.