Ceridwen: And Equestria… the whole world should hate that place for what it did to us!
Twilight Sparkle: You don’t have to do this! As queen, I’ve been trying to reach out to other countries. We want to be friends—-
Danu: Ironic. That was the same thing that nearly brought the downfall of our country, and now it will bring the downfall of yours.
What did Equestria do to Cunabula?
Yes, I’m pondering that. Why were the cunabulans so hostile to the ponies of Equestria? It is several weeks until we will get the answer, but there are two possible explanations; one is that the arrogant cunabulans thought the ponies were responsible for their country almost falling, possibly around the malfunctioning element trees, or that it was a much older conflict that had created a tense relationship that led to misunderstandings. Danu suggests that Cunabula was betrayed by those with whom his predecessors had sought friendship, but he, like Ceridwen, seemed to hold Equestria in contempt.
In any case, it is clear that the element bearers from Cunabula if they were responsible for the damage to the other realms when the temples were taken down, including stealing the magic from the abyssinians, it will not be Equestria, but THEM that the world would hate. They are doomed because their arrogance has blinded them to powerful forces, and they do not seem to realize that the other element bearers use ACTIVE element magic. For the Harmony is with Twilight.
Danu will have a revival of reality when he and the others realize that they may have made serious mistakes against innocents, and that there is very little that can excuse that kind, even by drawing in older sins. It is very unlikely that if he were to divulge his crimes in public, the cunabulans could avoid punishment.
Cunabula will probably be forgotten from the G4 / G5 lore forever, but first we have to find out why Whitley thinks it was a good story where he ended up trolling himself and all the readers. The plot is hopeless; even if we were to learn the truth, it is unlikely that it will be valued like any other information about the rest of the world such as Farasi and Abyssinia.