We're talking about a story with a flashback with not one single fight about an island with a rift of poor and rich. But somehow conflict is only resolved through fighting and that's all One Piece is about?
Again, I have to clarify, I say "primary", not "only".
That said, I can atleast concede you bring up an interesting, if semantic and largely philosophical, point.
If, objectively speaking, a given story's content largely composes of one thing, but you remember and value the relatively less frequent other thing, what is it truly 'about'? Is what's in the story that's more defining, or what you value about it?
I don't see the notion that One Piece's narrative content is largely concerned with some kind of violence or another to be an arguable point. To speak to your examples, the resolution of the toys was a revolt, the gladiators centered around fighting, King Riku was deposed by Doflamingo because he used his powers to attack his citizens. Fighting permeates virtually every aspect of One Piece. That's what I mean when I say it is about fighting, which takes on a multitude of forms, and is still the most consistent conflict resolution it has.
If you want to say you value other aspects of it more, and therefore that's what One Piece is "about" to you, that's fair enough I suppose.
But regardless, the original point I was making is that the fighting was an important aspect of the series that women aren't allowed to fully involved with on the same level of male characters, and that lessens their agency. I say again, if you can agree that women not being able to fight on the same level is both true and a bad thing, then I really don't see what we disagree about.
How in the world have you managed to read the past 800 chapters?
Literary masochism.
Edit: in case you actually want a fuller answer, I like studying narrative. To that end, how much personal enjoyment I derive from a work of art is basically an afterthought. I also want to say that the female character issues may be something I press hard about in these debates, but that's only because people seem to reply to these most often. I have bigger complaints about One Piece that deal specifically with the narrative, but they aren't as hot topic issues I guess. For me, a much bigger problem is that nothing about One Piece's world feels real, so I have almost no empathy to anyone or anything happening. I am unable to care about anything in this story.
But if you can say one thing for One Piece, it's unique. I rarely like most of what it does, but it often does it in a unique way, and it's fun to find the few things I do like. It's not much, but it's enough for me to have read the series twice over. It's like a puzzle. The internal workings of a clock. A story has failed you when you have no emotional engagement in it, but it can still be worth while to investigate it on a cold, mechanical level. You might think that's unusual, but this is pretty typical for me. I watched over a hundred episodes from Arrow despite disliking it from the start and having a pathological hatred of it by episode 5. I read Naruto for years despite hating it. I do have my limits, but a series has to be reeeeeeeeeeeeeeally bad for me to actually drop it.