This is one of the hardest passages on our exams, yes. And you can miss a passage like this one—all of the questions—and still get a V score in the 40 range, yes.
Basically, it's great that you earned this super-hard passage. Since the test is adaptive, you want to earn questions that are super-hard...and, in fact, too hard! And then you don't want to spend too much time or brain energy getting them wrong.
So the question now is how to recognize sooner that this passage is too much and you should guess and move on. This might be true for some or even all of the questions—it just depends on the passage.
If there are
parts of the passage that you do understand, go ahead and read those parts and answer any questions that cover that material. But for the parts that you don't get...move on.
I told my class the other day that, when I get to a part of a passage that's super hard and I don't understand, I don't slow down and read more carefully. Instead, I actually speed up and just skip over the part I don't get. If I get a question about that part, I then have a choice to make. Sometimes, it's the case that, once I've read the rest of the passage, I've learned enough information to help me understand the part that I didn't get at first. So if I feel more comfortable with the rest of it and get a question about the part that I didn't like, I
may go back and read it at that point to try to answer the question.
But if I only feel ok about the parts that I did understand, I bail on the questions that ask about the parts that I didn't. And if I couldn't get the passage at all / overall, I would guess on them all.