Complicated from these stories that are never seen as visions of modern racism and xenophobia. Replace the monsters with people of a different color or nationality.
The death of human waste will not change society. It only satisfies the reader's morbid desire.
If one day extraterrestrials appear that come from the oxen? Are you going to accept being destroyed for eating their meat?
@PawPadKnight adventurers aren't exactly soldiers and guilds aren't exactly companies either. So adventurers aren't exactly their resources nor their direct responsibility i.e I don't think missing adventurers are exactly of their concerns. Especially if you consider them more off mercenaries, the forest is known to be dangerous, and the adventurers from chapter 1 went into the forest without an actual quest assigned.