According to their policy about nudity and violence, your image doesn't fit either of them.

There are no bare nipples or areola, and the fabric isn't see through so you can't see through to the nipples and areola.  The crotch is covered. There is no bare buttocks.

Just holding a weapon isn't indicative of violence. Now if she was splattered in blood and there was a dead body in the scene or she was holding a severed head, or someone was being blown up, then yes, that would be violent. Simply standing there and posing with a sword is not violent.

The reason they want you to remove the flags is because using them when they are not warranted negates the meaning of them completely.

 

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi