All right, I'll give a relatively long, autistic response, because your second-to-last paragraph irks me and, I have free time to write a shit rant (some of this is not directed at your response, but just a general response to rating Egghead for this thread):
Honestly, I don’t really know how to respond to this. Criticism is welcome, but if you don’t like the arc overall, “you’re just hating for the sake of hating”? I thought you were being facetious with your original comment, but I guess not? I really dislike this point of view, especially since you yourself can’t even really articulate why you think it’s some of Oda’s best work so far aside from empty platitudes like, “it’s good,” or “it’s exciting,” or, “it fit the arc.” I see this type of rhetoric so often. I get that you probably didn’t put much effort into your response, but come on.
I don’t really get what you mean by, “the philosophy”. What philosophical questions or problems were tackled in Egghead? We had one satellite basically say, “I just want to do the science because it good”, and Stella waved away all responsbility in his broadcast by pretending not to know about the atrocities committed by the World Government (like what happened to Ohara). We got no exploration of how he feels about creating the Mother Flame, which directly enables the WG to eradicate almost all life on the planet, nothing about what it takes to provide him with the resources he needs, nothing about the negative implications of a global information network, or artificially manipulating the climate, or splitting yourself up into clones, nothing about what it means to be a clone in the first place, or to give sentience to inanimate objects, and so much more. I’m genuinely trying to think of anything that Oda was attempting to explore, and I can’t think of one thing. (Though, I’m not assuming that I haven’t missed something, that’s entirely possible.)
Lore-wise we basically got nothing but crumbs once again. Devil fruits are just “desire manifested” - that doesn’t explain anything. We still don’t know how objects are fed devil fruits. The will of D. explanation in the broadcast gets cut off by coincidence. The world is sinking, but we don’t know why it needs to. The ancient weapons exist, but we don’t know why. Joy Boy wanted to do something, but we don’t know what. One side is probably good, the other probably not, but we don't know which one. (I have a wild guess it's not the one where the people call humans, "insects", but who knows.) Why does the sea hate Devil Fruit users? Why can't you use multiple at the same time? How can they respawn if the user dies? Why can't you extract Logia fruits? What is "awakening"? etc.
Worldbuilding-wise, this arc is obviously trying to set up the finale of the story. We see the major players in the last chapter, in a cool double-spread. Okay great, so who are these major players? We know nothing about the motivation of more than half of them, nor what their plans are given the knowledge that “the One Piece really needs to be gotten soon now.” Shanks, we don’t know what his motivations are. Imu, we don’t know what they look like, what/why/how they want to do whatever they want to do. Akainu, we don’t know his motivations. Blackbeard, we still don’t know what is “weird about his body”, or what his motivations are besides “I want to rule the world”. Buggy, we don’t know how he intends to do anything because Mihawk and Crocodile have no intention of getting the One Piece at this point. Aokiji, we don’t know his end goal and his true allegiences. Garling, we know nothing besides that he is just evil. Silhouette-guy is just there.
It's still a mystery why characters like Garp, Aokiji, Kizaru, etc. or people lower on the ranks like Vice Admirals or regular marines would ever want to help the Celestial Dragons, when they're supposed to be the 'good' side in the One Piece world. Garp literally ignored a human hunting game on God Valley just to have a fist fight with Roger. Saturn says horrendous things about his view on the human race to Vice Admiral Dobermann - I think that's his name - and all we get is an exclamation and question mark as a response from him. But whatever, serve the slavers; just don't think about it.
I just ask, is it really acceptable that after 1,121 chapters we are at a point where we don’t understand over half of the major characters in the story? Do you really think it’s strange that people are at a point of exhaustion, where they just want answers, after so many years of not getting them? If Oda leaves so much up to the reader’s interpretation, is it really strange they get disappointed when their “headcanon” doesn’t come true, or gets actively contradicted despite earlier implications?
I mean I guess I could just be retarded, I don’t know. There's so much to talk about that's wrong in Egghead though, this is barely scratching the surface.
(Just want to add: it's fun to "hate" on stories, and think about why certain things don't work in storytelling. That doesn't mean you hate the entirety of the story, if anything it means you've become invested in it because it used to be/is good to begin with.)