They could be in control of their own base enough for us to not have done any of that. They're wasting resources. What if there'd been casualties? What if one of us had died because they couldn't keep some pests away from the castle-- not even getting to do our real jobs?

[Jin doesn't disagree that they had to fight the bugs, but... on the wrong line of thinking or not, he's got a point he feels like he needs to prove here.]