From reading your post, I'm just saying. It wouldn't have made a difference whether you guys knew what you were doing or not. You said it yourself and didn't deny it either that your group wasn't doing enough damage. That alone will cause any group to go their own way, but you are right about one thing. People don't need to be a jerk just to get a point across. There is a respectful way to go about it that there is no need to stress everyone out over something that really isn't that big of a deal and the best solution for that? Make more friends and stay away from the LFG becase it's going to get a hell of a lot worse as time moves on.