What is "scale" in this context? I think arguably 100 books over the span of decades is not "scale".
But tens (hundreds?) of thousands of books over the span of a few weeks? That's definitely "scale".
the law doesn't talk about scale, so either is perfectly legal. Memorizing a billion books vs memorizing one book. Same laws apply.
the law doesn't talk about scale, so either is perfectly legal. Memorizing a billion books vs memorizing one book. Same laws apply.