"Lore".
The incandescent crystalline structure that is being constructed in real-time right now @Disney is this:
1. J.J. Abrams wrote a lot of open lore threads into "The Force Awakens".
2. Rian Johnson literally erased most of them.
3. J.J. Abrams is writing & directing Episode IX.
I put real good odds on J.J. retconning a lot of Rian's decisions in this offensive mess of a movie. Looking forward to it.