After Terra said this, she added, "I understand your relations with the Cannes vampires are friendly, so I don't think you'll have a problem with that case, but for the others, the situation is more complex."
Andrew and everyone present understood perfectly what Terra was saying. The races that possessed the bodies of gods in their possession obviously wouldn't give them up so easily.
Even under the threat of the planet's possible destruction, they would prioritize their own personal gains. The aspiration of all beings in this world, to a greater or lesser extent, is to ascend as gods.
Everyone knows that to do so, they must use many resources and undergo supernatural experiences, and there is no better way to achieve divinity than the body of a deceased god, brimming with divinity.