With the huge influx of out-of-staters due to the energy boom, I'm going to hazard a guess that it's not Wyoming folks doing this.
That said, a guy could shoot a lot of antelope in Wyoming and probably die of old age before doing any significant harm to the population. Not that it's right...
My daughter worked in Pinedale this summer. It is a liberal bastion, with migrant oil/gas field workers, and a scattering of ranchers. I’ve never seen such a mix of folks on opposite sides of environmental issues in one community. Gorgeous place!
Some of the locals there call antelope “range maggots.”