This specific one might be the only one trackable. All we know is that the set of books able to be tracked is the same set of books that are trackable, we have absolutely no data on what is actually contained in that set (for the sake of pedantry, we know that at least the book pictured is in the set).

Whereas with your example about eating, we can define and catalogue all edible foods and know that it does include foods that may not be edible to others.

We know foods YOU can eat may be different from foods that someone else can eat.

But in the op, both sides are the same. Op is referred to tracked books that the book can track, and saying it can track all those books. Neither side of the equation gives us more information than the other.

Tl;Dr you're changing the parameters in your analogy, which throws off the entire thing.