No need to speculate; the allegations are linked in the article:
Harvard students and faculty harass, discriminate, and assault Jewish students—including on October 18, when a mob of protesters attacked a Jewish student, and the next day, when a mob trapped a group of Jewish students in a study room
Subjected to intense anti-Jewish vitriol, including from their own professors and Harvard administrators, Kestenbaum and other Jewish students, including SAA members, have been deprived of the ability and opportunity to fully participate in Harvard’s educational and other programs and have been placed at severe emotional and physical risk.
Moreover, over the past ten years, Harvard has instituted admissions policies that have severely reduced—by as much as sixty percent—the number of Jewish students, an enormous decline that evinces an intentional effort, much like Harvard’s quotas one hundred years ago, to exclude Jews.