If the two scripts had basically taken the story in the same general direction, but just accounted for Leia differently and gotten rid of wokeness, I could totally see how a general plan/vision was being executed. But "plan" means story.
In Trevorrow's Episode IX:
It opens with Kylo Ren hunting for Sith info on Mustafar while Rey trains.
He learns of a Sith Vampire more powerful than him and seeks him out.
Rey starts having visions of Kylo.
Rey, Poe and others go to a planet where they learn of a secret location where Kylo will be by having someone's memory probed.
On the planet the heroes are on a water skimmer but are hunted by the Knights of Ren who shoot at them from above.
Rey splits up from Poe and the others and flies the bad guys' ship to the secret location.
Kylo has a vision of Han Solo.
The ancient bad guy can drain the life from others.
A big space battle ensues with the other characters with Lando bringing in the calvary.
Rey and Kylo duel but then she gets drained and is about to die, he changes his mind, turns to the light, gives her his lifeforce instead and he dies.
Oh yeah and the ghosts of Luke, Ben, and Yoda intervene at the duel at the end.
Now what movie does that sound like to you?
And all of that was in script form *before Rogue One was even released* and over an entire year before The Last Jedi came out. So either the Trevorrow script is a lie or they had a planned ending (not even an outline but a full script) prior to the release of the second film in the trilogy which makes the ST way more "planned out" than the OT itself.
Also keep in mind that the Trevorrow script could have gone through however many revisions prior to JJ coming aboard so for all we know the final script of "Duel of the Fates" was even closer to TROS than the leaked one.
I get that "they had no plan" is a canned Fandom Menace talking point but the fact that so much of what ended up in TROS was put in print before even Rogue One hit theaters proves that that particular claim is categorically untrue.
