Not if Zoro was lifting the entire upper half of the Golem with his air slash lol.
Wait, so now calling Pica mountain level is generous? I actually agree because Pica terraformed an entire landscape, including several towns, and made the Flower Hill even larger. What would you call that? The same Pica created a golem which reached Flower Hill's peak, unless you stupidly believe Flower Hill is a small mountain as well lol. Usopp even stated Pica's arm is the size of a town which isn't even the entire golem.
Kaido's standing there for a whole month without taking damage. This shit isn't hurting him whatsoever. Ay had a whole ass minute before he cut his arm off which got hit by Amaterasu. There are levels to this shit. Sot6P Naruto was scared of lava as well; is Sasuke's Amaterasu killing him as well? Plus, Kaido can always deflect the flames with barrier haki.