Buddy if you wanna ignore evidence just say it.
Reread udon. There is a clear rivalry between luffy and kidd. And this scene just emphasizes it with luffy focusing on kid and not law
because kidd was in udon and not law
there really isnt a difference between the so called rivalry he has with kidd and law .
there was initially when law became his ally and kidd seemed hesitant to fight kaido with luffy.
but rn going by the latest chap kidd is acting like an ally as well.
he isnt angry anymore that luffy is going ahead of him to get all the hits on kaido
rather he thinks G4 would be worth it if it can damage kaido .
basically its silly imo to compare what feels like sanji and zoro bickering over minor things
to the rivalry that say luffy and blackbeard might have .