Here's hoping that a great destroyer of civilizations like Genghis Khan or other very powerful figures that haven't appeared or even been mentioned in the game are similar to Altera, in that they are actually extremely incomprehensible massive existences that absolutely no one could ponder. All so that we could have this kino or something with the similar caliber happen again.
Keep in mind, we fought ORT and it was TOUGH, to say the least. We fought it BEFORE Primate Murder, the White Titan, or any of the Dead Apostle Ancestors, much less the Crimson Moon himself. And it is said that ORT meant to be like the "secret extra boss after the final boss" of the Nasuverse.
I'm saying if we faced ORT, then it's logical we should face Crimson Moon as well and I think we might have a relatively easier time to fight him.