So, I queued for a vet random dungeon. I was transported to the final boss of Moon Hunter Keep.
I have 35k+DPS on average and I know the mechanics as well. However, I am still a miserly 580 CP. So the three noobs (all 810) thought in their "holier-than-thou" attitude that a 580 must be unable to do what they are stuck with and booted me before the fight even started.
Now I don't really care about such issues, but come-on dudes, if you are stuck at the final boss with three 810s, it's you guys who need to be booted.
There should be a self boot option.