Surprisingly no, they have no obligation to update the police. At minimum a theft was presumed to have occurred at the time the report was filed, so it wasn't knowingly malicious.
Nobody placed anybody in any kind of legal jeopardy, but yeah, you can call it a conspiracy theory. This is a big reason nobody who knows anything says anything (well, this and the NDAs), it reads just like one. I'm not asking anybody to believe me, but as someone that's been attached to the story since before it was public I am confident enough in it and more or less have it as a case closed in my mind. We're not getting another update so it's every man's inference for themselves from here on out.