He has lost all that once made him human. I'm not saying that's any excuse for his stupidity, but merely his reasons.
This is why the mortals are rarely allowed the power of us. For all that it is worth, good Titaness, let us keep this focused on the individual. We do not need another war. Neither side could take up arms here without many mortal casualties, and I believe we all have agreed to do no harm to them for the purposes of wars.
He's new. We'll... handle it within our own ranks.