I honestly don’t get it. Recently read a manga and they ACTUALLY WORE THEIR BLOODY HELMETS DURING BATTLE! It was glorious! Occasional a stray bullet destroys the helmet sadly…but for a large chunk of it all, they actually fucking wear them! You could still tell who is who by body proportions, dialog and context so that wasn’t really an issue. Also it’s hella dramatic to take off the helmet after battle or when trying to negotiate with someone. It just makes soo much more sense!