Evolution of the local patch is predictable from the patch alone. Violation of inequation is when this evolution has correlation with a distant patch. Copenhagen interprets this correlation as causation, hence FTL.
> Evolution of the local patch is predictable from the patch alone.
How do you know, that there is no non-local influence, that makes your predictions "from the patch alone" incorrect? I don't think this can be easily excluded as a possibility.
We can assume that there is no non-local influence and try to make progress from there, but we might be wrong about it, which is what the article is getting at, if I understand it correctly.
> Evolution of the local patch is predictable from the patch alone.
Only if you take the experimenter and his decision as part of the local patch, and take the decision to be determined by the same state which also determines the experiment's outcome, which is essentially what superdeterminism is, no?