Like that won't be abused.
I don't do m+ often and I try to stick it out if I can. Today. On a +6. The tank and key holder shot off and went straight to Dino boss. Yeah, sure that's what you do. Except you wait till everyone's there and then jump down. Not this guy. Ok, healer a bit unprepared and we wipe. I have a bit of a lol, cause who cares. I'm bored. Tank leaves. Oh well.
Maybe that guy should be punished. The guy that left the rogue doing 9k? I don't think he should be punished. I think he should be congratulated. When you enter a pug, you are entering on the assumption that players are at least credible. In my case I would be judged to have acted in good faith IF I had left. The one who fucked up leaving? No. That's toxic. You fucked up, do better next time.