Some would consider Hinata being made a character with meaningful destiny in The Last movie to be something of a character-service. However, I've often found that there is logic and consistency behind many occurances in Naruto.
In terms of Hinata, there is at least a logical route to it.
Before I go there, it could indeed be 'prophetic', such that even if the author made it up for the movie, her character story still fits. It's somewhat like how Naruto and Sasuke being reincarnates may have been decided halfway through the story, but we already had been given Hashierama and Madara to build the idea upon. In the case of Hinata, its her life story. She started off as the in-verse Cinderella, being bullied by family but eventually chosen by the prince as the most beautiful. This is interesting because Kaguya could be similar. Not only is she the only female alien we have seen, but her attack on Isshiki and plan to create an army of Zetsu strongly suggests she never got along well with her own people. Then we add in that prophecy and reincarnation in the story usually work on a very wide bearing, not being very precise. For example, Hagaromo prophecied Naruto long before the debacle with his sons - which made it possible for reincarnarions to occur in the first place - happened, which implies the prophecy was somewhat a prediction and Naruto just so happened to fill the shoes. So in her case, Hinata would be similar in that she happened to fill the shoes of a Byakugan Princess.
So what about the logic and reasoning that explains why a specific character is the one who gets chosen as a reincarnate when others could've filled the shoe? In other words, what awakened the link? Well, it turns out something happened with Hinata . . Something unique!
Actually, it was two things. Firstly, she experiences the pain of being rejected/outcast from your own. If one works from the conclusion of her being a parallel to Kaguya, that makes things interesting because it would imply that Kaguya hated her clan because she was forced to marry Isshiki when she loved someone else, so she too was motivated by love just like Hinata was motivated by Naruto, but anyway . . . Secondly, and what really got things going, is that HINATA HAD TEN TAILS CHAKRA IN HER. It seems no one made anything of it, but in the 4th War, Hinata used Twin Lion Fists on TT Spawns. These would've had the TT chakra in them, so when Hinata absorbed it from them, she absorbed TT chakra into her. This chakra would've activated/awakened whatever ancient link there could be to Kaguya in her blood. Since Hinata is the only one shown absorbing this chakra, she is then put in a very unique position of being a candidate for being a spiritual reincarnate.
That said, I am quite displeased that nothing was made of this absorption in the immediate aftermath. Like, Hinata should've immediately unlocked some crazy chakra boost or something. Maybe that's just the fanboy in me, but I do feel it was under-utilised, that instance.
So basically, two things:
- Hinata absorbed TT chakra, making it logical/reasonable for her to have something related to the aliens. I would've hoped for immediate chakra powers, but it seems the author chose a reincarnation story line
- Applying story continuity logic (that is, the story is consistent in-verse), we can start with Kaguya being an outcast just like Hinata, to reverse engineer her story and theorise other parallels with Hinata, such as that the cause of the conflict was romantic.
In terms of Hinata, there is at least a logical route to it.
Before I go there, it could indeed be 'prophetic', such that even if the author made it up for the movie, her character story still fits. It's somewhat like how Naruto and Sasuke being reincarnates may have been decided halfway through the story, but we already had been given Hashierama and Madara to build the idea upon. In the case of Hinata, its her life story. She started off as the in-verse Cinderella, being bullied by family but eventually chosen by the prince as the most beautiful. This is interesting because Kaguya could be similar. Not only is she the only female alien we have seen, but her attack on Isshiki and plan to create an army of Zetsu strongly suggests she never got along well with her own people. Then we add in that prophecy and reincarnation in the story usually work on a very wide bearing, not being very precise. For example, Hagaromo prophecied Naruto long before the debacle with his sons - which made it possible for reincarnarions to occur in the first place - happened, which implies the prophecy was somewhat a prediction and Naruto just so happened to fill the shoes. So in her case, Hinata would be similar in that she happened to fill the shoes of a Byakugan Princess.
So what about the logic and reasoning that explains why a specific character is the one who gets chosen as a reincarnate when others could've filled the shoe? In other words, what awakened the link? Well, it turns out something happened with Hinata . . Something unique!
Actually, it was two things. Firstly, she experiences the pain of being rejected/outcast from your own. If one works from the conclusion of her being a parallel to Kaguya, that makes things interesting because it would imply that Kaguya hated her clan because she was forced to marry Isshiki when she loved someone else, so she too was motivated by love just like Hinata was motivated by Naruto, but anyway . . . Secondly, and what really got things going, is that HINATA HAD TEN TAILS CHAKRA IN HER. It seems no one made anything of it, but in the 4th War, Hinata used Twin Lion Fists on TT Spawns. These would've had the TT chakra in them, so when Hinata absorbed it from them, she absorbed TT chakra into her. This chakra would've activated/awakened whatever ancient link there could be to Kaguya in her blood. Since Hinata is the only one shown absorbing this chakra, she is then put in a very unique position of being a candidate for being a spiritual reincarnate.
That said, I am quite displeased that nothing was made of this absorption in the immediate aftermath. Like, Hinata should've immediately unlocked some crazy chakra boost or something. Maybe that's just the fanboy in me, but I do feel it was under-utilised, that instance.
So basically, two things:
- Hinata absorbed TT chakra, making it logical/reasonable for her to have something related to the aliens. I would've hoped for immediate chakra powers, but it seems the author chose a reincarnation story line
- Applying story continuity logic (that is, the story is consistent in-verse), we can start with Kaguya being an outcast just like Hinata, to reverse engineer her story and theorise other parallels with Hinata, such as that the cause of the conflict was romantic.