Via Gamespot.com:
Part of what made Star Wars: The Last Jedi a controversial film among fans was the way it handled Rey’s parentage. Fans speculated wildly about who her parents might be, but it was revealed in The Last Jedi–written and directed by Rian Johnson–that her parents were … apparently no one of any significance at all. That revelation, in addition to the killing off of Supreme Leader Snoke, irked some fans. They thought the reveal of Rey’s parentage and plans for Snoke were part of some grander storytelling scheme.
Now, Johnson has suggested that he wouldn’t be bothered if Star Wars: Episode IX from JJ Abrams retcons some of the storytelling beats from The Last Jedi. Johnson was asked directly by MTV News if he would be bothered if Episode IX retcons Rey’s lineage.
“Like I said, man, I want to let go of all my expectations,” Johnson replied. “I want to sit back. I want to be entertained. I want to be surprised. I want to be thrilled. I want him to do stuff that I wasn’t expecting him to do, and just go along for the ride. For me, that’s why I go to the movies, you know?”
Explaining the reveal of Rey’s parents, who were nothing more than “filthy junk traders” according to Kylo Ren (Adam Driver), Johnson said, “We’re not here to give Rey an easy time; we’re here to put her on the hard path so that she has to. Because that’s the path of a hero.”