Here are two links from the same critic. The first discusses weaknesses in RJ’s story, and argues that TLJ’s biggest weakness is, that the story doesn’t go anywhere. There are no consequences.
Short summary:
"In The Last Jedi, a lot happens. But not a lot happens for long. Leia’s sudden and unexpected death only proceeds her jarring return to life.
Kylo Ren’s betrayal of Snoke, which leads to a team-up with Rey and himself against Snoke’s guards, implies his redemption… But it isn’t long lasting as his actions hardly reflect his intentions. After the fight, he has to explain himself to Rey, and how they still aren’t on the same side.
This is a classic break from “show, don’t tell.” Kylo has to tell us his motives for the scene to make sense. He essentially retcons the entire sequence, because it might as well not have happened. The scene ends up telling us nothing new. Kylo Ren is a bad guy. But we were already aware of that. Actions should speak for a character, but in the most powerful scene of the film, they don’t.
Lastly, when Luke finally faces Kylo, there’s a moment where we’re meant to believe this is the end for the Jedi Master. It seems as if Luke has accepted his fate as Kylo runs toward him with his blade drawn. Luke literally tells him something similar to what Ben Kenobi tells Darth Vader: “If you strike me down, I shall become more powerful than you can possibly imagine.”
Luke seems fearless. But then, we realize Luke has nothing to fear after all. He’s not even actually there. This scene is meant for us to anticipate Luke’s death, only for it to be revealed he’s fine… Only for it to be revealed a moment later that he dies anyway."
https://medium.com/@timothymably/the-last-jedi-is-poor-storytelling-d22e45427278
In the second link the writer gives his thoughts on how TLJ could have been improved, largely hinging on the idea, that Rey’s parents were among those that betrayed Luke along with Ben Solo, and Luke was forced to kill her parents in the ensuing fight. The writer cleverly provides Rey with strong motivations for joining the dark side to avenge her parents, whilst also providing a backstory for Snoke, that ultimately sheds a light on Luke’s Jedi teachings, that in his version of events rejected much of the Jedi dogma in favour of building on Luke’s own experiences redeeming his father (going so far as to hide the ancient Jedi texts from his students), which was then used by Snoke to tempt the young Jedi students with false promises of learning the true Jedi faith. It is actually a pretty good read, and to me highlights several of the story issues, and the lack of proper character motivations, that imo plague TLJ:
https://medium.com/@timothymably/reimagining-the-last-jedi-luke-killed-reys-parents-2ec7f32aa729