No, it’s not that it HAS TO BE ART, but more that the very nature of the work they are translating can never be completely divorced from politics. The setting makes certain implicit assumptions that are baked into it, and playing neutral, and failing to acknowledge this political element, is accepting this inherently political position.
Things like the use, and efficacy of force, the role of the military as global peacekeeper, even the way conflicts are presented. Notice how much acclaim Spec Ops the Line got for merely acknowledging and engaging with these factors. The presence of civilians in warzones is generally ignored, in this attempt at neutrality. But the way these things are presented can never be fully divorced from political engagements.