I think you're misunderstanding the authors intention. Fuzzy finding is the banner feature of zoxide, i.e., it's only a better cd because it includes that feature. Everything else is just the necessary table stakes features in order to make zoxide a viable cd alternative. E.g., it's not notable that zoxide copies the rest of the useful features from cd in Bash, because that's exactly what it would need to do in order to be a cd replacement.

What you could argue with is whether there's a point to replacing the cd built-in in order to include fizzy finding (personally I don't see the point of this either). But the reason all the other cd features are included is in order to make that viable.