I mean, he unfortunately got there AFTER the events of the game. He has knowledge of the setting and specific people sure, but has NOTHING on potential future events.
Plus he doesn't even want to be there lol. He cares enough to worry about their safety and do his best in helping when needed, but he doesn't seem to have a deep attachment to any character, outside of like, having a favorite ship (which was dashed to pieces). Long story short, he does NOT give a shit lmao

But why is Yeon not being active MORE in this situations? Like didn’t he play this game before? He always gets jumpy when he’s involved or something.