It would be great to give each of the NPC's their own character. For example, some of the NPC's could have a grudge against the hero for reasons of their own. They could be cheering against him for causing such a ruckus in their village, or maybe some "Monday morning quarterback" happening, thinking they could have handled the problem much better than he did. I think an LLM may be pretty good at coming up with some ideas. Or maybe even make it a bit tongue-in-cheek and have some of the NPC's be fans of the hero's enemies.