Depending on the camera and film she had, she might not have been totally wrong. Or, at minimum, this likely allowed a higher "keep" rate for shots without futz

Depending on the camera and film she had, she might not have been totally wrong. Or, at minimum, this likely allowed a higher "keep" rate for shots without futzing about with the ISO setting, exposure compensation, or anything else (which might not have been available if she was using a basic P&S).