Probably overuse of oden stuff. Idea is good that he made Kaido's daughter admire someone who is an enemy...but the execution
Yamato is bound to develop and something will come off from that "I am Oden" gag... The point is... the execution is YET to come for her... and only after we see how she will develop we can decide if it's done properly... at least that's what I think, cause I'm still waiting for the execution actually... and I am surprised to see you say "the execution is bad" when we have yet to see how this plot "I am Oden" will evolve into