The thesis of the article is hardly convincing. Outside of the Military test differences, the writer didn't control for any other explanatory-variables outside the one he wants to be the cause, which is that groups faced varying degrees of discrimination from the white majority. Also, a fact that weakens the paper's argument is that the group patterns produced by East Asian immigrants here have also been replicated in other countries like the Chinese in various Southeast Asian countries or the Japanese in Peru. From my point of view, its harder to make such an argument when the same exact phenomenon occurs in non-white majority countries. I'm also highly skeptical about the characterization being made about Asians prior to WW2. The paper is implying that the academic success occurred much later as a result of lessening interface at the hands of whites, but I remember reading something that contradicts with this notion -
"Even during the era of anti-Chinese feeling in the United
States before World War II, Chinese schoolchildren were among
the favorites of teachers for their academic performance and their
good behavior. At the college level, Asian American students have
consistently scored higher than white American students on the
mathematics portion of the Scholastic Aptitude Test. However,
Asian Americans’ success in academia and in later careers is not
simply a reflection of higher test scores. A scholarly study found
that white students had to have IQs 15 points higher to match
either the educational or the economic performances of Asian
Americans." - James R. Flynn, Asian Americans: Achievement Beyond IQ