Garp was a Vice Admiral and Sengoku the Fleet Admiral. Was Sengoku more important than GArp?
I don't give a single fuck about agenda. It's not about agenda. I keep telling you, I'm going off Koby's portrayal.
Comparing him to Kinemon and Tama is disingenuous - Kinemon and Tama were never considered the future of a faction full of immensely strong and capable people, they were never seen as the beloved protege of one of the most popular and impactful Marines, they weren't in the second chapter of the series with them becoming a Marine at the same time the MC sets off to become a "professional" Pirate, and they weren't shown to announce their dream in the same panel as Luffy proclaiming he'll be the Pirate King.
Oda has given Koby build up. Should he have given him more screentime, feats, and portrayal? Yes. Does that mean he doesn't still intend for him to be very important? No.
There's no reason to assume that Oda will have Koby constantly say he wants to be an Admiral and fight against Luffy, just for him to actually not do that at all. This isn't like the Scabbards saying they'll kill Kaido to avenge Oden, Koby's dream was literally done parallel to Luffy saying he will be the PK.
-> Garp was introduced as from the get go as "the man who cornered the Pirate King multiple times", aka "character statements" that put him at that level. Before water 7 people had no reason to believe a random dude on cover story was as powerful as Fleet Admiral Sengoku or the Admirals, and nobody did. lol.
-> That's an example of character who played huge roles in an arc's narrative despite being nowhere near the strongest of characters. That's not me making a comparison between the characters, just that Oda doesn't care for powerlevels vs narrative importance. Vergo is a fodder bum compared to Tensei/Chaton/Gion, he has more narrative importance in the series.
-> So you tell me it's disingenuous to compare him to characters who weren't powerful but had huge narrative importance... While then comparing Koby to Luffy... what?
Luffy has constantly lost and fought over and over and over and over and over against strong individuals in the series.
Koby has fought fodders, even after 2 years of training, he has only fought fodders. He was 1 relevant feat on panel, against essentially the ground in a non-1on1 combative situation. Just so we understand out of 1050+ chapters, Koby has 1 relevant feat of combat and it doesn't tell us anything about how strong he is in CQC. You're claiming Koby becoming an admiral is running in parallel to Luffy becoming PK right... ok, no problem, let's take a look at what Oda's done so far to build up that dream of Koby's so he'll be an admiral in parallel to Luffy becoming the PK... and we'll just go with other Marines who're coming up:
Drake X in Sabody pre-TS: Blocked Killer and Urouge's attacks together without his body shaking or anything of that sort.
Drake X in Wano: Went against Tobiroppo , Worstgen member, YC, Strongest CP0 , Numbers
Smoker at PH: fights Law, fights Luffy (while in Tashigi's body), fights Vergo, then fights Doffy.
Smokerr at MF: Went against Luffy, went against Boa
Smoker at Alabasta: Went against Ace
Sentomaru at Sabody pre-TS: Fights the SHPs and owns Luffy easily.
Sentomaru at Egghead: Fights Kizaru, fights Lucci
Tashigi at PH: Fights against Law, Fights against Monet.
Koby at reverie: Takes care of fodder pirates
Koby at Amazon Lilly: Is bruised up from fighting the normal Kuja, with the Kuja pirates all being fine.
Koby at Hachinuso: Is fighting fodder pirates, until at the very end he does a singular attack against a slow giant hand while Helmeppo and Grus allowed him to charge up, which had very impressive destructive scale.
He isn't shown fighting Vasco, Devon, Teach, Boa, or even the Kuja sisters at Amazon Lilly. He isn't shown fighting any YC from BBPs at Hachinuso... Garp literally had to 1 man against fodders + Vasco + Pizzaro + Shiryuu + Kuzan + San Juan...
Maybe I'm not seeing the same script from Oda as you guys are. But where is Oda showing Koby becoming a powerhouse admiral in parallel to Luffy becoming the Pirate King?? Where is this powerlevel progression that you're seeing from Koby?? Luffy/Zoro/etc have had insane growth spurts since timeskip, due to them constantly fighting against top dogs and being on verge of life n death, including DF awakenings, scientific powerups, sword upgrades, etc.
I don't think there's any marine fan who doesn't believe Koby will be an admiral whenever he reaches his peak. Argument is we don't think he'll be one in 6 months or year when the main story ends... but he'll be one in the Epilogue. Hell my guy Naruto needed a whole epilogue with years of timeskip after the main story ends to become a Hokage lol. You're acting as if Oda giving Koby the dream to be an admiral means he must become one within the main story.