Things to think about before you call someone "Bad"

[Ilyrian]

If someone plays bad (by your own personal definition), leave them alone. You're unlikely to see them ever again after the 18-23m run of a random duty YOU chose to run without your friends.

I don't think anyone has said that berating people and acting like a dick is acceptable. That's quite the leap you made there.

If your tanks and healers are bad you're not clearing any of Alphascape. If your tanks and healers are good and all of your dps is bad you're not clearing any of Alphascape.
Who should claim responsibility for these runs if we don't have any personal responsibility to play to a basic functional standard?