Yeah. I think I've only ever been on two matches that were wiped out. I do not hesitate to bolt into a safe corner when I see 6/8 are already dead, especially not as a medic. People have to learn that undue risks get you killed. A group that sticks together, advances slowly and fills all of their roles is essentially invincible, except maybe for the respawning waves going on at the two harmonic switches up in the sawmill.
Learn to pick your matches. When you see a room with five spec-ops, you can be certain they are all just there because they think that's the coolest class. When you see a room called "mics only", you know there'll just be a bunch of whiny bitches screaming for medics after getting mowed down over and over again.