Channel72 said:
In my research efforts to reconstruct a history behind the writing of The Last Jedi, I’ve found that Rian Johnson’s portrayal of Luke was a direct result of Rian’s attempt to work within the story parameters he inherited from The Force Awakens. We know that J.J. Abrams wanted Luke to be hiding on some island, mostly because the writers initially didn’t want Luke to steal the stoplight from the new characters. So J.J. Abrams decided Luke would be hiding on some island, but Abrams never really worked out much of the backstory details beyond that, except for the broad idea that Luke was on some pilgrimage to find an ancient Jedi Temple. Presumably, Luke was seeking answers after the disaster that befell his Jedi school, but the whole thing is very half-baked. (J.J. Abrams loves half-baked mystery plots that take place on a remote island.)
When writing TLJ, Rian Johnson tried to make sense of Abrams’ half-baked plot point of Luke hiding on the island. Rian apparently decided that the best way to explain Luke on the island was that Luke didn’t want to be found, and purposely cut himself off from the Force. This idea was pure Rian, as Abrams initially had Luke using the Force at the end of Force Awakens, levitating some boulders while meditating. Rian Johnson asked Abrams to remove that scene so TFA would fall in line with TLJ. Everything else follows from there.
Now, Rian’s idea for Luke sucks. But it’s not like Rian was working off a blank slate. Rian inherited this stupid scenario from J.J. Abrams, with Luke hiding on an island for under-explained reasons. In my opinion, Rian’s idea only makes it worse and isn’t even compatible with Force Awakens, because (A) it doesn’t explain why Luke would have left a map and (B) it doesn’t explain why Luke went to an island with an ancient Jedi Temple if he wanted to be cut off from the Force and die. It’s also hilarious how Luke is wearing these pristine white robes like a venerated Jedi Master in J.J. Abrams’ version, but in TLJ, Luke immediately changes into his less dignified bum clothes after Rey arrives. Luke’s change of wardrobe signals that a new director has arrived on the island.
But whatever, the point is, we can retrace the historical steps that led to The Last Jedi turning out the way it did, and it clearly has little to do with some malicious plan to damage Star Wars, and more to do with horrible story-telling decisions that probably seemed like good ideas to the people involved at the time. That said, Rian Johnson at the very least must have been aware that what he was writing would be very controversial. He probably thought it would be worth the gamble and trusted his instincts, not wanting to repeat the same old Jedi training scenes from the Original Trilogy, and believing his script would be vindicated and praised as bold, innovative and original, and most importantly, unpredictable, with many “twists” that defy pre-conceived audience expectations about a Star Wars sequel, much like Empire Strikes Back.
TLDR: J.J. Abrams vomited out a typical low-effort mystery box script that exiled Luke to a remote island for half-baked, under-explained, out-of-Universe reasons, and Rian Johnson just ran with it and added his own personal angle as an auteur, thus turning Luke into the depressed asshole we know and love. It’s not what I would have done if I inherited J.J.'s mess of a story, but then, Disney doesn’t care what I think.
Here’s the thing. There are many creative things you could do with that setup. Like you said, you could say Luke is trying to figure out why his academy got destroyed and how he could change things for the better. Hence why he would go to the first Jedi temple, to learn about something the original Jedi knew that was lost over time. Maybe he was researching a way to beat Snoke and he didn’t want anyone else getting in danger while he was working, but it didn’t pan out. The idea I came up with when I first saw TFA was that Luke was afraid of his own level of power - he was at the point where he had so much mastery over the Force that he was tempted to use it in ways that would lead him to the dark side. (A sliver of this idea sort of gets used where he’s afraid of Rey’s power and he was afraid of the power he gave Kylo Ren, but it’s immediately dropped.)
What Rian CHOSE to do with that setup reveals a lot about his own opinions and worldview, especially given, like you said, it doesn’t make any logical sense either.
