I think you're very on point with this analysis.
Personally though, I think it isn't so much that fortifying his mind after an epiphany and subsequently unlocking a powerup is why people are having such a huge gripe with this. And while I 100% agree that the way Oda is putting all the different narratives together is not helping the situation...I feel that that also is not the main reason why people is not enjoying this because Oda has done this before...jumping from character to character. He does it a lot so we have already dealt with that.
I think it is because CoC is involved in the powerup. I can't say for sure but a different powerup not involving CoC might vibe better with people. Like I said before, this feels forced. Sanji should get this upgrade but not like this. Oda could easily use the same situation and have Sanji realize self love and thus his passion burns even hotter to the point it melts metal.
Oda really should have handled this differently imo, rush or no rush. The good news is that this only affect Sanji but overall, I am enjoying the shit outta Elbaph.
To be clear, I have mixed feelings about this back half of Elbaph, and I think you would know that since we've spoken before, but just to be clear.
Anyway, I want to reply properly. For the first paragrpah, I would agree. I would suggest maybe that the first paragrahp in conjunction with the rest is making things a little worse. If we were to guage fatigue, we are kind of in a different situation than say, even Egghead.
This time, we have more Gear 5 fatigue, and we also have characters actually just standing around. In Egghead, EVERYONE was in motion. Vegapunks were being wiped out, Franky was oneshotting a Vice admiral, the giants were better utilized. Chopper blocked a Gorosei while Brook cut off his leg and so and so. Combine with the first paragraph, and the more frequent breaks and I think we're in a rougher spot, psychologically.
Second paragraph, I agree that I think CoC--and the way its venerated within the community--is a bigger mental hurdle.
I think, that right now, it is fair to say that Oda does not value CoC as much as the readers do, in a sense. And honestly, this should not be a controversial thing to say. Oda had the luxury of always knowing what CoC was. But the readers created a bigger myth about this thing over the years . I really cant stress it enough. The impact that something has in your own internal valuation system, one person probably has it all figured out after a month of thought, but the readers had to deal with Conq development dripfeed that lasted years. The myth of Conq exceeds the reality of Conq.
And even in the late game, there were still people who didn't understand the genetic component. But while we all here getting excited about who had Conq and who didnt, to Oda, Conq was the cost of entry to the final fights.
Regarding your solution, I am all for unique solutions and welcome yours. Zoro, meanwhile, should just have cut Sommers up, taken the metal heart, and tied up the rest of the pieces. Problem solved. He could have been off discovering Conq while clashing with Imu's conq.
But again, here is the problem. Blue flames, logically, can melt many metals. Sanji's already at the point that he can logically solve this problem just like Zoro is. If Sanji revealed he could melt metal, Oda would have the real world backing him up, due to the nature of ifrit jambe.
But what does that tell us? If Conq is the solution, then Oda is just laser-focused on Conq being the cost of admission.
Regarding your final paragraph, I'm a little split. If this was a development written in the notebooks, then I agree. But on the off chance that something changed for Oda in May(roughly when the altered breaks began and Oda began taking more actual restful weaks), and different choices had to be made I cannot fault him for the rush. It's also possible that he's trying to give himself more time right now by delaying the plot reveals on all the plots.
For example, what he is doing in the Chopper plot has bought him weeks of finetuning what the final result actually is, regarding that box.
Some people might think that's weird, but that's a strategy you can use when you need to spin wheels on a weekly release, but in One Piece's case, the utilization of the plot delay strategy indicates an unfortunate situation behind the scenes.
For the record, Oda
does use the sillohuette strategy to give himself more time to flesh out designs. Generally, shonen jump encourages this. Dr Stone was another manga that I recall using it, off the top of my head.
For me, I was happy with Elbaph. I'm just ready to move on. The strawhats and luffy are going to be okay, there's going to be a party, we're going to Lodestar. There is no time dilation on Elbaph. The bragman's warning was just going to be a joke. Would be cool to be wrong, but I still think this is more likely than not.