And there we have the end of your debate. Apparently Kishimoto is supposed to describe abilities that have not yet been created, in full detail within the pages of the book printed and released before the inclusion of that jutsu in the manga.What dogs***t logic we might as well say this about everything else that wasn't introduced to at this time. Can you actually try and put up an argument?
"Where was Infinite Tsukuyomi mentioned in part 1 or Databook 1?? It had to have been, it's included later!"
Who knew. You got me there.