Are you dumb? No shit thats gonna stay, you think he's just gonna say "**** helping people" as a doctor?Funny how you ignored Chopper's aggression towards Caesar throughout Zou and his conviction towards healing others, which remains as intact as other.
You're entire problem with Chopper is his design is made to sell toys, and that's why his character development is bad, and you expect anyone to take you seriously. Please.
That would be some next level horseshit writing, Oda is far from stooping to that level.
You clearly didn't get the fact that his design and his actions go hand in hand. His entire demeanor in fights is not serious anymore, he is literally a cute joke character when it comes to any battle situation. He is not to be taken seriously, before he used to be.
Again design alone is not enough, his demeanor has changed for the worst. Become as linear as can be in battle.