I'd say you hit it dead on.
I've said it before, I don't know why people who can solo every quest, choose to do so with an audiance.
Or the other type of zerger who cannot solo the quest, and blames his death on those he left behind.
There is an ok type of zerger out there.
But so far, not a single post I've seen by those defending zergers have been by that kind of zerger.
So far every single post in defense of zerging, has not acknowledged any responsibility for other members of a group to have fun too.
If you want me to have any respect for your point of view, you had better come across as actually concerned about the fun level of other players.
If the only person having fun that you care about is you,....well....that's a real selfish viewpoint.
And if you think watching someone else kill everything is fun....well....you're wrong.
If you think being left for dead is fun...you're wrong.
or left behind....missing all the action.
etc.