What is the topping on the cake is that most of that meat is being exported as well.
Wild mustangs and wild burros are multiplying too fast and over grazing public and private grassland in the west. They are pretty to look at, but are very hard on range lands. The numbers have to be reduced and harvesting them for meat to send abroad is one way to address the problem.
Managing any wild life is part of the real world. We in Wisconsin manage whitetail deer with a hunting season. That is better than having all new trees in our forests eaten by deer or hitting a deer every time we drive down a country road.