>>2247513Why not both? Poka replaces nothing in my mind, if Rei cannot be able to express human emotion and you find it inacceptable when she does, then you aren't into a character as much as you are into an image.
In reality, poka replaces nothing since it takes place in ~the second quarter of the story, with both a third and fourth quarter to go, which is where Rei gets that monologue and so in the original.
The original Rei also stuttered and blushed at times.