I have finally realized what kidds character is.
Using a school reference: Luffy is the dude who surprisingly is a prodigy along with zoro. And they both just get good grades all the time and they compete over who is the valedictorian.
Coby is the late bloomer that started off dumb but rose through the ranks being the top 5 smartest person in the school through sheer will and aptitude.
Killer is the bad boy type that seems dumb as bricks but is secretly a genius always getting the best grades he can obtain while keeping his bad boy persona.
Now kidd. Ohhhh kidd kidd is the guy that is dumb as bricks who came from a back ground of smart people hence why you have so much hope for him since their is so much hype revolving around him. But people need to realize that he is his own person and not that dude. So they need to stop having such high expectations. He is simply an average guy and needs to be treated as such