You are very wrong.It’s important to point out that these are his old sequel trilogy plans. This information comes from “The Star Wars Archives: 1999-2005”. Lucas is merely recalling ideas that he had at the time of the prequel trilogy, he’s not speaking of the plans he was actually trying to do when he sold his company.
The version of the sequel trilogy that Lucas envisioned but was discarded by Disney would’ve been vastly different and wouldn’t have Maul as a central villain(he already brought him back in Clone Wars). Lucas had various iterations in mind on how the sequel trilogy would be. This is only one out of many versions of the sequel trilogy that he toyed around with.
I do love the idea of shifting focus onto Leia, in keeping with the fluid chosen one motif that first applied to Anakin and was kind of adopted by Luke later on chronologically. Leia being the final chosen one that brings a galactic governmental balance bears out logically.
That’s what I noticed as well which makes me quite dubious if this was entirely the plans he was going with before he sold to Disney. Other sources like the TLJ art books describe a different version of the Lucas’s sequel trilogy which had Luke with characterization similar to what was seen in TLJ where he was this reclusive, spiritually broken old man that would eventually get his spirits lifted up again with the help of a force-sensitive girl.Some of these pieces refer to picking up shortly after ROTJ. Surely that wasn't in those outlines..