Is anyone else annoyed by the extreme cluster of new people in the game? It's pretty annoying, I'm 8 challenges away from 500 and most don't even know what the hell they're doing. I haven't even had one challenge completed (that I need) in a week!
Don't be an elitist. Welcome the new players. Guide them with your microphone. Or host the game so you can selectively kick people who aren't doing challenges.
If you are dead set on completing your remaining challenges (which is totally fine), then find a dedicated group of people and host a private game. Then you wouldn't have to deal with people not following the game plan.