If all of what happened in these spoilers is true, then Kishi is without a doubt one of the worst writers, because it negates 15 years of a relationship that went nowhere.
Not that he wasn't already going down that path. The story since the Pein arc has been jumbled. The war arc was lame, the reveal of Obito was terrible because it led to a bad redemption and the story of reincarnation and Madara's mother were complete asspulls. Honestly, how can your main villain have such random buildup. And that's not even including the fact that all Uchiha have more or less a mental illness that makes them evil.
But wow, if this is true, it's just the cherry on top of the terrible sundae. When developing a romance, between whoever it is, it has to have more important moments. Look at so many others, Yu Yu Hakusho, Inuyasha, Love Hina, Avatar: The Last Airbender. Those are just a few examples that had final pairings that had solid development and hints at. If these spoilers are true, it will have a character fall in love with another character, when he didn't even acknowledge her for most of his life.
Truly awful. The Heaven and Earth chat is open if anyone wants to visit on that.