Well, while I cant deny that there are infact idiots who throw themselves at enemies they cant best, there are also skilled players who would like to complete a task. Sometimes when I join a strike its mostly completed already as evidenced by quits and disconnects. Also idlers. Sometimes that second or third teammate wont move at all, how long is one to wait near the world spawn before proceeding to the target? Until they dc or start moving? There are so many circumstances to consider so I try not to generalize people or players. Personally when I matchmake I have been with other high levels who also would like to continue on quickly, its called efficiency and sadly that word is getting a bad wrap. I do kill mobs that are obviously in the way, but if you cant kill patrol mobs before the strike areas then there are already problems. Tl;dr .. some people are idiots but its matchmaking, usually you will get a good team in my experience.