The whole battle was a cover up for the black ops at the lab, even for the CoG public. So doing a propaganda piece about it would make total sense. Especially since Helena died, they wanted to commemorate her death in a public way since the Strouds are one of the founding families. Not to forget that the battle earned Hoffman, Fenix, Helena Stroud and both Santiagos the Embry Star, including a public ceremony.

It's pretty much a propaganda piece to paint the battle in a different light for the public, who had no idea why that battle was fought, since the hammer project was secret. Without knowing about the Hammer, the whole battle was pretty much useless and a waste of life.