Thank you, I do think before posting. That was a needless comment.
Teamwork is a metric in an MMO? Thank you for telling me. Anyways, yes teamwork is required for any group based activity. Teamwork has to be there for anything to be successful. Damage is the only metric that people care about. This why people try to maximize it for faster runs. Yes it is possible to run it without stacking, hence the video, but doesn't mean it is the fastest. People want the fastest, hence the the damage being the only metric.