Sort of, because deer meat is packaged by volume not weight (ie quart and gallon sized bags are units of volume). The chest girth method uses a perimeter measurement around the deer and that is more directly relatable to volume, compared to the weight measurement.
The chest girth measurement doesn’t change that much, as a deer carcass dries out, nor does the number of quart bags required to package up the edible meat. The scale weight reduces sharply as the carcass dries out though.
Folks get confused about this, because the grocery store sell meat priced by the pound. In reality, the scale weight of the carcass don’t mean that much, because more than half of that weight is made up of water, and that percentage drops off sharply, the longer one takes to get the carcass on a scale.