The point is that the question is vague and is open to multiple different "correct" answers. SAT questions should only have one correct answer, with no possibility of any others.
It's not just that it was poorly worded, but rather poorly conceived/analyzed. Apparently they had wanted the right answer to be "3", and therefore basically asked the wrong question (which would been a bit awkward to word!).
The point is that the question is sort of interesting and the history is just fluff for YouTube clicks and video length. The context is irrelevant.