Board Thread:Theories and Speculation/@comment-36649908-20180820043133/@comment-4080775-20181023234730

PIS (Plot Induced Stupidity) is a thing and is quite popular in manga and anime alike (Look at how Momoshiki didn't absorb Sasuke or Naruto's chakra or larger techniques). Also, you have to introduce the Jougan some way, even if it did come out of nowhere, we'll learn more about it later on (as the creator said). Just because something was introduced without an immediate explanation doesn't mean its an instant asspull, especially when we were directly told that it will be explained in the future. People just love to complain about stuff they disagree with or don't like.