Liroj and Bot came from tiny family-sized villages and every troll on the island had at least heard of every other troll. They were not numerous enough to develop real politics. Some elder was listened to as an authority, but that's as far as a chief's status went. Even their war with the humans amounted to "if we hurt them they'll stop coming". They have a hard time conceiving that one could sacrifice one of their own for political gain. While Bot may be more demonstrative than most, his reaction is normal. Liroj might have a more cynical nature, as he's more capable of grasping such a situation.
Yeah, this is not working out at all. Everyone is upset, I think the trolls are ready to go home now!
If they knew how boats worked they would be on one right now.