To the goblinoids, plants are for medicine and spices. Eating plants as food would be like trying to get drunk on water. Food is raw liver, brain soups, and lots and lots of roasts. Food is meat.
Goblinoids all enjoy hunting, and maintain some forested areas as game preserves, but the majority of food comes from great herds of auroch and boar. A large minority of goblinoids make their living off of cattle, rounding
them up for slaughter, killing monsters that threaten them, clearing land for them, or stealing them.
The shift from humanoid plant-based diets to goblinoid meat-based ones has caused a shift in the entire landscape. The great herds of cattle eat their way across the landscape, leaving only the thorny and poisonous plants untouched. Deforestation is occurring rapidly and deliberately, as trees are cleared and burned to expand grazing lands. Floods and brushfires are becoming more common. A rough, goblinoid equilibrium is asserting itself.