Warning: Spoilers ahead for The Book of Boba Fett episode 6.
Grogu’s training under Luke Skywalker is shown in The Book of Boba Fett episode 6, but Luke presents the young Force-sensitive with an ultimatum that betrays the hopes of the late Jedi Grandmaster Yoda. With Grogu as his first student and a new Jedi academy under construction, Luke Skywalker is rebuilding the Jedi Order, but as “Chapter 6: From the Desert Comes a Stranger” and Star Wars: The Last Jedi have demonstrated, Luke perplexingly restores the Jedi Order to its prequel-era ideals. By doing this, Luke not only misses his opportunity to improve the Jedi Order, but he also fails to learn a Jedi lesson he’d mastered in Return of the Jedi and re-learned in The Last Jedi.
In The Last Jedi, Luke Skywalker is disillusioned with the Jedi Order, having come to understand the magnitude of their failings during the prequel trilogy era. Luke had rebuilt the Jedi Order and made no changes to their flawed ideology and restrictive lifestyle, contributing to the fall of Ben Solo, who joined the Knights of Ren, becoming Kylo Ren and taking a leadership role within the First Order. Rather than rectify his mistakes, Luke stands idly by, allowing Kylo Ren and the First Order to murder countless innocents and initially refusing to train Rey.
Related: Star Wars: New Canon Keeps Making Yoda Even More of a Failure
Toward the end of the film, Luke speaks to the ghost of Yoda, who imparts one more lesson to his old student: That they both are what the next generation of Jedi are meant to grow beyond. In Return of the Jedi, Luke did precisely this, ignoring the poor advice of Yoda and Obi-Wan Kenobi and embracing his attachments and emotions without being controlled by them. Luke
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