Zoro can use CoC freely and with any sword. No, it's not happening.
The wankers better hope King and Queen were not fully recovered. If they were, Oda just made the Admirals look even stronger and Yonkos (Kaido and Big Mom) look weaker and closed the gap between them and YC (King and Queen).
King and Queen both embarrassed Big Mom. While severely injured and weakened Zoro bested Hybrid Kaido in battle.
They better hope GB can absorb energy by touch alone. If GB plants have to pierce the body to absorb then Kaido and BM are done. If King's more durable body can't stop his plants than Kaido and Big Mom's durability won't stay a chance.