What kind of unrelated answer Is this? We are not the writer AND SO?
What we are talking about Is the fact that if we like a story, we guess what will happen and there are things that we would like to see and things that we wouldn't like.
What you do is say that you would like to see things, take this reasonning as a fact, and explain that if said thing do not happen, it's bad.
Problem: You don't know what the story needs and most of the time those assesment (in a general manner) are made without understanding the narration of an arc.
But even if we take you example "things we don't want to see" > (if you don't like what you see, move on to another story btw) Here, Oda prepared Kizaru for battle, he didn't promise a duel with Sanji but he did made Luffy beat Kizaru and NOT ONLY THAT but he also made him beat Saturn at the SAME time.
Any fan of One Piece would be thrilled by that. There is no world where there is a fan saying "I don't like Luffy being a badass" So what you don't like here ? Exactly, you don't like the fact that Oda did go with Sanji VS Kizaru that you WANTED to see. In other words, you are not mad because of something you didn't want to see, but because something you wanted to see didn't happened.
And this is called illegitimate expectations.
You are basically saying that for any work of art I cannot say that I would have liked X or Y
The first case is normal fan expectation. The second case is illegitimate expectations turned into trashing on the story.
After all these years I still can't believe that I have to say that with One Piece, but a good readers know not to place their expectations in front of the story.
The fact that you chose to read OP in an absolutely passive way It's legit and your own choice. You are entitled to.
1. You don't understand analysis
2. You don't know me.
I may be one of the LEAST passive person in front of One Piece on this forum. I literally militate everyday for this forum to create spaces to discuss the political intrications of the story to push people who are completely unaware of it to start looking into it. I was the main pusher of the CarrotForNakama theory, literally defended her place alone for years against an army of problematic posters and Yamato fans.
I might be one of the most hardcore analyst of the narration of One Piece
So trust me when I say that managing your expectation has NOTHING to do with being passive. It's simply the process of understanding that what you want, is not necessarily what you need. And in One Piece, most of the time, you will want something that is OPPOSITE to what you need.