Lying in Obi-Wan’s arms amid the desolate, moonlit terrain of Tatooine, Maul’s final words in Star Wars canon were a desire they both be avenged by Luke Skywalker, not just by the Jedi. This may seem like a strange sentiment, given how many years Maul spent consumed by the dark side of the Force. However, Maul’s final confrontation with Obi-Wan finally gave him closure, allowing him to relinquish 30 years of resentment - even if vengeance was still on his mind.
The enemies engaged in one last fight during the climax of Star Wars: Rebels season 3 episode “Twin Suns." Despite all the hardship he had faced and the many enemies he made, Maul never forgot about the Jedi who sliced him in half on Naboo, thereby drastically altering his path in life. They were bound by hate and suffering. So why would Maul want to be avenged by Luke, the son of a Jedi?
Maul and Obi-Wan shared a common enemy in Darth Sidious, the grand architect of the demise of the Old Republic, and destroyer of both their lives. Maul’s obsession with hate led to his downfall, but not before realizing their t goal. In the end, old rivalries became meaningless, and Maul’s statement regarding Luke cemented his place as one of Star Wars' most tragic characters. Maul felt betrayed by Sidious, discarded in favor of Count Dooku, and having lost his role in the Clone Wars.
Originally blaming Obi-Wan, Maul eventually realized he was simply a pawn until Sidious secured the apprentice he truly desired. He attempted to Solo: A Star Wars Story and Rebels, Maul lost control of crime syndicate Crimson Dawn, while Obi-Wan was already in exile, having lost all his loved ones.
Rebels saw Maul cling to his rivalry with Obi-Wan because he had no purpose. He attempted to insult the aging Jedi, but The Chosen One specifically was prophesized to destroy the Sith - a comforting notion that Luke would defeat Sidious, metaphorically avenging Maul.
In his dying moments, Maul found some semblance of peace, but could never abandon his hate. However, he did find common ground with Obi-Wan. Having been used and abandoned by the Sith all his life, Maul could finally see how similar his and Obi-Wan's goals had become. Maul didn't know Luke's actual identity, but it didn't matter. His Star Wars arc ended with the hope that Luke possessed a destiny Maul never had.