And that's your choice, you can continue to think any dps that pull off you are "retarded"(even if they are) and I'll be making sure I'm holding aggro despite their learning disability, and enjoy my MvP rewards by being a better tank.
The point of the DF isn't to assist people in learning, it's there to assist people get into dungeons, their skill is irrelevant. And this system is designed to promote good play between strangers, regardless of their skill level.
And just assuming you haven't watched the video, the most effective way to pick up those rock adds is to use circle of scrorn/flash and attack them. You don't have to stand in 1 spot the entire fight.