Exaggerations aside, doesn't matter if Zoro can/can't fight Kaido with/without Enma.
He is fighting him, and is using Enma.
Enma is getting hype since Hyori mentioning it being THE ONLY SWORD THAT GAVE KAIDO HIS SCAR. Which is really BS, considering that even some non named blades from the scabbards could cut and pierce him.
Zoro is "japanese", Wano is "japan", and Oda wants to wank his own piece of culture inside his story as much as he can.
I think he does a terrible job at doing it, but doesn't change the fact that he is doing it.
Same way I dont know why people disregard the Raid Suit. It's part of Sanji's arsenal now. It's his "SSJ" gimmick. He uses when the fight arrives at a point that Oda feels he should use it.
Enma and Raid Suit are here to stay.
If you like/dislike any or all of them, get used to them.

I'm just happy they started to give more recognition to Zoro this chapter, despite still wanking Enma and Oden. At least we are shifting away from this garbage.