Deer are the same, diet is important. Nobody will eat a fish duck either. I have taken doe in PA and they were delicious, next season get one in the same place, same size and they were terrible. So far, here our deer are eating corn most of the season and only a little toughness will be found.
I once killed a big, old buck in Ohio that stunk. I cooled him quick and never touched hide to meat. The meat was rank and 2 hours in a pressure cooker still needed a chainsaw to cut. More trophy bucks are tossed for that reason. You might be required to take the meat but once home they get garbaged. I have the cook book for covering wild flavors, it does not work.
The black bear I have had was sweet, better then beef or deer. Elk and moose has been super.
I can see fish eating bears being bad since it all goes into the fat but bear fat has been prized for a long time. Maybe spring bear.
I killed deer that ran out of food and had to eat hemlock that were still good. Something else in the woods of PA caused bad meat.
I have to say I have had more bad deer meat then any animal even when cared for. I hate the wild taste and do not understand how some can eat mutton or goats. No wonder they are terrorists.
Experience has made me a doe or button buck hunter. Why work for hours and hours for meat you can't stick past your nose?
We are the same, eat a bunch of garlic and nobody will come near you. Would you feed pigs garlic?
Bears are like pigs, eat anything and everything. Yet pork is always good.