And approval doesn't translate to everything's now canon.
so you think gege is allowing them to create noncanon now when they just said they work with gege to follow the story as precisely as possible. then what do you think approval is. go ahead and create something that doesn't represent the story or what i want? lol
Feel like that just makes the manga pointless
gege never said don't read my manga. the anime may provide: emotionally, color wise, impact wise, (added bonus of voice acting conveying more emotion), sound wise better and things that the manga does not have, or make some scenes and more, look far better. But that doesn't mean it would replicate things unique to the mangaa nd the like.
For example: in season 1 gege didn't want to have any narrator, which is why u don't see any narrator statements in season 1 anime (talk about "not involved with anime" eh?) which he then changed his mind on (Season 2). Do u think those statements are now suddenly gone and invalid canon wise? no.
Interview with Seko Hiroshi (JJK Composition/Screenplay)
“There’s an order from Akutami-sensei to not use narration for anime production, which is often used in the original work. The narration used in the original work is a unique expression of manga and — I think it feels uncomfortable when a third person reads it out loud in the anime."
Though he later on changes his mind on this as we all see in season 2
The manga has things the anime may not have sometimes. Heck it doesn't even have the extra pages done in the anime, like the correcting the limitless one (Honestly they should have, since it does give a clear insight but idk why not) and such.
It's why the anime is treated as secondary canon, although in some aspects for scenes, it could be "primary" canon (in a limited sense) for essentially doing the scene better than the manga did.