I completely disagree. This game has some strict DPS checks and it would be very helpful to know who is not pulling their weight. While I greatly discourage over-harssment from jackasses, I see absolutely nothing wrong with someone saying "Hey, sorry but we gotta replace you if you don't improve. We want to actually beat this thing." People already kick and harass others for failing mechanics, DPS check is no different. If you are too much of a pansy to handle constructive criticism than don't raid, its clearly not for you. So you want SE to make end-game raids to be so easy that it don't matter what your performance is? Yeah, a hell of a great idea that is. Contents are already getting easier and easier with every patch as it is.

Trust me, if people can clear the content even with your horrible dps, most will not care enough to complain. When they do complain, it is often justified in order to actually win.