I eat everything,believe me...(except seal meat and Pizza Pizza,as you know)
......and am all for farmed Bison.....though it is limited (imo) by its leanness...
Wagyu it is not 
(Remember.....it was  decided diet,butter,etc has no role in cholesterol etc etc)
.
The Red River colonists subsisted on Bison for almost the first 50 years of lousy wheat crops...
I feel an empathy/sympathy for the beasts  and rarely buy it when I see it :)
I would never shoot anything....and toss bugs out the window.