None of these questions matter. No passing in intersections.
Says who? That doesn't appear to be a law anywhere I know. No one in this thread has been able to produce one, just statements that they think it's unreasonable.
My answer is the opposite of yours, it doesn't matter if the passing rider had a "right," passing in an intersection is so common, you need to be prepared for it.
If you're riding and assume no one is going to pass you in an intersection regardless of whether you fail to signal or where you're positioned in the lane, then you're asking for trouble.