In the previously altered history, Shen Shi saw the remnants of the city falling from the sky. Presumably, in that history, he should have sent Sebas to help humanity, which allowed the successful construction of the Space City on the Planet Fortress within just two years.
Unfortunately, the defeat of humanity and the loss of the Planet Fortress made this so-called "Space War Refugee City" meaningless.
However, the current Shen Shi naturally would not say it like that.
He also understands how convenient it is to have such a powerful AI that can quickly process vast amounts of information during an economic transformation. Moreover, as long as the Planet Fortress doesn't fall again, these Space Cities still hold strategic positions in the war.