Ushi also translates to cow, giraffe & cows are related, albeit not the closest. So
Ushi is at least somewhat relevant to Kakus fruit, just like how
Uo is probably relevant to Kaidos
That being said, I concede. I definitely still think Kaido evolved his fish form, akin to a Magikarp turning into Gyrados, rather than start as a dragon, but Gyrados did end up getting an “Awakened” form, so I prolly lose this one
I look at how artificial fruits work with a few grains o salt