I don't believe that he origin and provenance of the system matter as much as the effect. What does matter is that two people who would each prefer the others' place, where that swap wouldn't affect others, should be allowed to swap positions. The rest of the article is a clear attempt to justify the intentional spreading of misery.

For example, "we can’t make every student entirely happy with a lottery system. But we can try to spread the unhappiness as equally as possible."

In my opinion schools should be for teaching, even if only a few students are able to learn. Schools should be about having the same limits on all. That comes from the false metric of wanting all to leave the system with the same qualifications instead of the best qualities that each can individually have.