Copying the pattern helped him to increase the speed to Snakeman level since before using Snakeman pattern, Kaido was neck in neck with base Luffy in speed.
Kaido never blotzed Snakeman. He bit Snakeman after Snakeman stretched his arm, pulled his arm the stretched his arm again.
No different than what Katakuri did here.
Except Katakuri did it to faster attacks like Black Mamba.
Snakeman is the only attacks that forced Kaido to use FS. Cry all you want