It sounds like the donor had requirements. From The Tribune:

The University of Chicago has received a $100 million gift from an anonymous donor to support free expression, marking what may be the largest-ever single donation to support such values in higher education, the university announced Thursday.

And:

Discussions surrounding the donation have been ongoing for over a year, according to a university spokesperson.

From …suntimes.com/…/university-chicago-donation-free-… :

The gift was ridiculed by advocates involved in the encampment that highlighted abuses against Palestinians in the Israel-Hamas War and torn down by the university in the spring.

“It’s truly a slap in the face,” said Yousseff Hasweh, a U of C grad who’s diploma was withheld by the university for two months, allegedly for his involvement in the protest.