The Hyur Midlander Theory:

He suffers post traumatic stress disorder. Constantly having flashbacks of battle/wars he's been in. Losing himself from all the conflict.

Each race in the group he is in is really himself. Why else would he be a ranger at one point, but then become a warrior?
In short, we are him, what we do is what he thinks he is.

During the Dalamud Crisis, he was fight against the garleans so much he has no clue of what to make civilians do in his mind, which is why the NPCs of the game never really cared about the moon getting closer.