Why would the Viz say that Zoro needs to reach a level that he can never hope to attain? That’d be like saying that Captain Kuro needs to reach Rayleigh level. It’s simply not possible.
Let Zoro surpass Kamazou before we talk about him surpassing a real top tier like Fujitora. Nobody in Wano even cares about Mihawk, and this was the exact type of island that should’ve cared about the World’s Strongest Swordsman, but nobody here has expressed interest in Mihawk even once.
Mihawk’s title is a fake title created to give Zoro fans the illusion that Zoro is going to achieve something impressive by the end of the series. Fujitora is crowned top 3 in a military consisting of millions of people who actually want to attain his level of strength but cannot. Meanwhile the only guy in the series who has ever stated he wants to surpass Mihawk will do it next arc.
Literally 100% of people who care about becoming the World’s Strongest Swordsman will attain the title, that’s how non-special of a title it is. But .00000000000001% of people who want to reach Fuji’s level can attain it.