"Must" is pretty strong, it's preferred to have this tool for the current end-game situation but absotelutely having it is another thing.

I'll take your point on 18 hours but the aspect people tend to forget is the enrage/Insta-kill mechanics deter from a consecutive run. So the PW fight was 18 hours of non-stop zerging, buffing, alliance switching, potion popping, focus testing endurance run of nasty, which still was not beaten. Whereas these enrages, although discouraging, promote breaks, moments to eat, moments to use the bathroom, ect.

Those that were apart of that 18 hour non-stop slug fest reported not eating, drinking or using the restroom outside of the casual members of the ls, so just a guess at the matter, at least 6-8 people, on their decision alone, was like I need to stay here and do absolutely nothing else but focus on this fight.