^^
I don't think she's meant to be an ideal otaku; I'm not sure where you heard that. I suppose the reason why she acts the way she does is probably because the animators think it would be funnier that way though I do agree that they push her tsun side too far.
I haven't read the novels and manga yet, but from what I've heard she's more reasonable in them; still a tsundere, but nicer than the anime version of her.
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