When dps dont aoe should they just get kicked from the start?

[TouchandFeel]

To me it all comes down to whether or not people are trying.

If you are new, learning, etc. and are struggling a bit but are trying, then I will stick with you the whole way and run out the timer doing my best to help you succeed both in the content and in learning and improving.

If you just don't want to bother even trying, well then I don't want you in my group. Expecting to just have the other members of the group accept dragging your dead weight through content is incredibly disrespectful to the other players and their time. I am not your dungeon chauffeur. You know what I do when I don't really feel up to running something and I know I would just half-ass it if I did? I don't queue for it.

Also, slacking off in this manner makes absolutely no sense whatsoever to me. You end up making things more difficult for yourself, and everyone else, by causing more screw-ups and making things take longer by actively not trying than just putting in a modicum of effort and making things go so much faster and smoother. It just results in more overall effort spread out over a greater period of time because you wanted to try to force putting in less effort at any one moment.

As to the initial question posed at the beginning of the thread.
I would say mention it in a polite and respectful manner. If they respond rudely or state that they just don't care to bother trying, then go ahead and initiate a vote kick.

Taking advantage of AoE attacks for large groups of enemies should be DPS 101 as well as the conclusion of basic arithmetic and common sense, rare special case scenarios being the exception.