Your post is misleading stating this is due to loss of revenue from fall sports. At most colleges, athletic and general university revenues are totally seperate. Most AD's dont contribute anything to the general univesity budget and the ones that do, its not much relative to the overall budget.
University budgets are hurting due to many factors related to COVID....lost housing revenue, lost dining plan revenue, lost parking revenue, refunds of other fees to students, increased investments in technology and online delivery platforms, drops in giving and a great deal of (non-budegted) money spent on implementing COVID policies like free testing to all students and staff and large scale space renovations required for de-densification.
Now I am not saying there is not associated revenue issues related to no football but it has little direct imapct on the general university budget. Much of these budget issues would be a reality even of there was 70,000 plus showing up for a football game.