I've noticed when rereading this with the most recent chapter, Han seems to lack curiosity because he has experienced how seeking out answers just gets you deeper into things and will end up to your demise. Like, when he was active before duty, presumably in his past he continuously was asking, seeking answers, but that ended with his while team being killed or disbanded. And when he was being interviewed in the Ant Hill(?) he wasn't even wondering what or why to anything he was being told, them further making it clear by having the agent say it directly.
I've noticed when rereading this with the most recent chapter, Han seems to lack curiosity because he has experienced how seeking out answers just gets you deeper into things and will end up to your demise. Like, when he was active before duty, presumably in his past he continuously was asking, seeking answers, but that ended with his while team being killed or disbanded. And when he was being interviewed in the Ant Hill(?) he wasn't even wondering what or why to anything he was being told, them further making it clear by having the agent say it directly.