In the end, I thought her perspective was that evil (and war) is something in people. Gods or no gods, that fight is something everyone has to face. The work she does after that is about that fight/making the world a better place (not in a particularly ‘demigod’ way).
Can you elaborate? The wikipedia summary, which accords with my memory, is that
She kills the person she thinks is the God of War. This doesn’t stop the war.
Steve sacrifices himself to stop the poison gas. (This is most of the “not literally nothing” I was referring to. I may have been downplaying it.)
She kills the actual God of War. The war stops. (This is the “beat up the villain and then everything will be fine” I was referring to.)
If it weren’t for (3) I’d agree with you.
In the end, I thought her perspective was that evil (and war) is something in people. Gods or no gods, that fight is something everyone has to face. The work she does after that is about that fight/making the world a better place (not in a particularly ‘demigod’ way).