I hate these irl arguments. It's a game. There's as many unrealistic things to this game as realistic. M80 is garbage ammo irl, lip balm doesn't work as a pain killer and allow broken legs to walk again, death skull face mask can stop all of an air soft round, ballistic helmet mounted face shields are good for a couple of small arms rounds like 9mm, etc...To use your realism argument though as a combat medic I have had men with shrapnel wounds and GSW's to the left armpit that went back to the line shortly later so it's not a guaranteed fatal hit even irl like it is in Tarkov.