Large endowments are not always a straight forward metric to use for determining how well off financially an institution is. Lots of contributions to endowments come with strings attached on how the money can be spent. Wouldn't be surprised to hear about a large number of new costs associated with COVID that wouldn't be covered by a lot of an endowment.
[1] https://www.insidehighered.com/news/2020/05/22/colleges-face...