This explains the refusal to set aside some Ivy League admissions for non-Jewish whites - Asian and Jewish students misperceive that they would be harmed, and so they prevent it. For reference, the non-international student body of the Ivy League, circa 2019 (source: https://news.ycombinator.com/item?id=30338742):

                          Ivy League   US      ratio  mean SAT*
  Jewish                  17.2%         2.4%   7.16    n/a
  Asian                   19.6%         5.3%   3.71   1216
  White (incl. Jewish)    50.3%        61.5%   0.82   1148
  Hispanic                11.4%        17.6%   0.65   1043
  Black                    7.8%        12.7%   0.61    966
  White (non-Jewish)      33.1%        59.1%   0.56  ~1141

On the other hand, the study defined "advantaged group" very differently. I wonder if this would affect their results? They should do a follow-up study and compare.

*Source: https://www.ednc.org/eraceing-inequities-the-influence-of-ra... - estimate for non-Jewish white SAT calculated by assuming the Jewish score is a generous 200 points higher, and adjusting that they are only ~4% of all white students. I.e. the true value is likely closer to 1148.

While Asian students benefit greatly from their 173- and 250-point leads over Hispanic and Black students, non-Jewish whites are, bizarrely, not helped at all by 98- and 175-point leads over those groups.