@HacheBe:
Except she can't actually read it yet for whatever reason she has to learn to be able to do it. Which is probably why it wasn't such a big reveal. She doesn't actually know how to do it yet.
Her maybe not being able to read them just yet actually affects my point very little. The reveal has still been made, the information is out there, presented extremely casually.
–- Update From New Post Merge ---
@Jabra:
Robin is still the star once they reach Raftel, and Oda has set that up nicely with Rayleigh questioning the conclusion of the Roger Pirates.
@Buggy:
Yes, that's what I said too. Robin is still the only one that can get the exact information.
As for BM & Kaidou, I don't think they care about the void century.
@Chrior:
So, in the end, there is no reason to think any kind of Poneglyph reading is cheapened, especially Robin, who has a far superior advantage, by actually being able to read the damn text. Although there was also another family who could read the texts, the knowledge was restricted to something like 3-5 people per generation and has been lost completely due to Kaido killing Oden. So yes, Robin remains really special, with her reading ability and the immense historical and "poneglyphical" knowledge she has accumulated, that can help her put together the Rio Poneglyph, something that no other party can even dream of
Robin is still unique, but her uniqueness has shifted a great deal since the beginning.
We started with “Through dilligent research the Oharans became the only people capable of reading Poneglyphs, a skill so dangerous to the world Government had the entire civilization pay for it with their lives. As the last Oharan Robin is the only living person capable of reading Poneglyphs, and is a crucial key to the ancient history and its weapons, as seen in Alabasta and Enies Lobby.”¨
Now we’re at “Actually, besides Ohara theres’ still bloodlines and whole tribes capable of reading Poneglyphs due to innate abilities, and thus can get ancient history/weapon info and directions to Raftel. But Robin is the only one who can appreciate the full historical content of the glyphs!”
Robin still important. But now her importance has caveats. Robin has a head start in Void Century 101 due to her studies and inheritance of the Oharan research discoveries, but this new tribe of magic eyeball-havers can skip that step interely.
And About the “unfairness” of the Straw Hats having the one Robin, the “fairness” of other Poneglyph-decoding options being available, and Roger logically wanting as many people as possible to be able to find One Piece…
1: In-universe Roger was executed years before Ohara got nuked, and IRL Roger was executed years before Poneglyphs and Robin were a thing.
2: If Robin is still unique in terms of being the only one to grasp the full context of the Raftel poneglyphs, even if others can read them…then that, once again, makes the Straw Hat crew the only people in existence capable of accomplishing Rogers goal. You can’t have everyone capable of reaching the goal Roger set and have Robin be special at the same time.
3: Poneglyph reading is only essential for reading Raftel, because Oda made it so 30 chapters ago. His hands are tied now, but Poneglyphs didn’t need to be essential for directions; some other, more easily readable markers could’ve been implemented, especially if the goal is to make it feasible for people to actually get to One Piece. Then, once you get to Raftel, Poneglyph reading could be the key for unlocking the true, hidden message on the island. This is just an example, but you get the idea.
4: If we accept that alternate Poneglyph decoding methods are a necessity, these methods deserve proper buildup and delivery. Its already a bit much to swallow that we’re at 2/4 super poneglyphs 30 chapters after the concept of super-poneglyphs was introduced.