It's not about there being an issue with Luffy fighting Kizaru, I don't care who Luffy faces, people think that I'm against Luffy facing Kizaru for a reason because I'm countering that in my arguments.
However, Oda is clearly writing this story in a way that it is making it VERY OBVIOUS that Luffy will fight and defeat Saturn. Saturn is the main villain of the arc and he is stronger than Kizaru. Nika will free Bonney from Saturn, this chapter made it 100% clear.
Also, Luffy already defeated Kizaru once, punched him again, he has nothing to prove to him anymore. Luffy facing Kizaru again is not going to bring anything.
Why did Sanji stall Kizaru this chapter? Kizaru was even shocked about Sanji. Luffy did not even get to hit him while he could have. I think that Sanji and Zoro will take down Kizaru and Lucci, with probably interchanging their opponents at some point.
Again, I don't care at the end of the day what happens, it's just that it is VERY OBVIOUS what is going to happen and people ignore that for some reason to push their agenda.