Damn, picking this point in time to argue against me when I can't reply!!! And bringing a new argument while you're at it LOL. But calling my stance wrong, then I'll just add a bit since I didn't discuss this with you previously, and purely on the technicalities of English as a written and spoken language.
I'll just point out that we mentioned colloquially many times during the discussion, also too much is being made out of rules used mostly for essays and thesis and other types of formal writing. In narration and rhetoric there are a myriad of of literary devices in which repetition is used... and we're talking about a title from an entertainment medium here. So there's really no "style error" as you call it (well there is, but it's subjective), it is very dependent on how formal of a work we're talking about and what the intention of the repetition is all about. But yes, in general, repetition should be avoided when possible, particularly if there are perfectly good synonyms that can be used as substitute (which I believe many of us have agreed to already). And I'd be the first to criticize a novel when a word is overused, but... from there to it being WRONG in English, then that's a step too far.
In fact, if this was a formal essay or thesis, I wouldn't use even one instance of "so" anywhere.
I think now I've touched upon all the elements of interest. Don't agree, that's fine, but wrong it isn't.