Kid does not even have any Haki. Bad example since Kid has a OP Awakened DF to compensate.
We know Shanks 12 years ago had AdCoC when he was duelling Mihawk from Film Red & Volume 4 Billion... you think Mihawk did not have AdCoC back then itself?
You think Mihawk won't have AdCoC when Zoro does? When every Swordsman ever worth anything in the verse (Zoro, Oden, Shanks, Roger) all had AdCoC, you think the Strongest Swordsman won't?