“He simply hasn’t included current-year data.”
Data that undermines his thesis that there has been a steady decline in Asia-American acceptance at Harvard. He is suggesting there is a quota and that quota is below 20% and Harvard is adjusting their numbers down to whatever the below 20% quota is.
That Harvard enrolled class essentially back to the percentage of Asian-Americans in the year he claimed a decline had started, makes the omission of the latest year disinformation on his part. He had a thesis and since the latest data did not fit his thesis, he ignored it.
Regardless, as I said it is in a disreputable source. So it matters little that it is one more untruthful article from that source.
You are entirely missing the point of the graph and data that he is presenting. The percentage accepted has stayed within a narrow band (of 21% or below), while the pool from which they’ve been considered has doubled.