That's the exact time to shoot first. He thinks we took it too easily, and that it's a trap. We know there's a traitor in front of us trying to do something. She's left herself wide open and needs our help to execute her plan.
That's not the time to patiently wait for whatever the Garleans are planning to be executed. It's time to shoot to kill and then GTFO with the hostage.But Mikoto wasn't under threat anymore. We're surrounded by people with ranged weapons. We could have obliterated Misija before she took two steps with our combined firepower.The second is more character specific attribute of the Player Character falling into a specific heroic archetype as far as the general story in concerned. The WoL is very prone to protect friend and immediate allies over sometimes the long-term consequences. In this case it seems ensure Mikoto's wellbeing override the rest of the situation, mostly because the WoL wasn't exactly aware of Mijsa's plans at the time either, and when there isn't a specific plan, the WoL tends to just act in the immediate. Let's just say there is a good reason why the Scions and other groups in the games tend to make the major plans and the WoL is kind of directed in what the plan is, because left to their own devices they tend to follow immediate situation even at their own expense or with unintended consequences.
No one, Mikoto included, is made safer by going along with the traitor's plan when the readily available alternative is "take her out". Considering that's exactly what happens after everything goes wrong because no one bothered to act earlier, the whole thing is just ridiculous.
This wasn't even a negotiation. It was us following the demands of someone with a hostage after they didn't have a hostage anymore, and the entire resistance went along with it because "reasons". That's why it doesn't land, and the only emotion it evokes is annoyance. They'd portrayed everyone involved as competent up until this point, but then a cutscene starts and no one is capable of doing anything except the one random NPC who wasn't even there until the writers wanted someone to actually do something.


