Welcome back exile. There are indeed some chests that have the arrows that you mention and the other chests, especially in the beginning over the tubes has lots of Darfari decorations, but the dungeon is not disappointing at all, neither the rest of the loot. I do agree that these chests should have something more than flint arrows and probably they will in the next chapter, but it performs correctly after many years, it has 2 world bosses and many other chests with incredible loot.
So except the complain for these chests, the whole other feedback is incorrect.
Cherry on top, climb this chain.