Just to be combative:
I don’t see them scheduling classes or exams on Sunday mornings.
Most schools don’t schedule intermural activities or sports on Sunday mornings.
The school probably has a chapel somewhere.
The school is out for all the major Christian holidays.
In my opinion, reasonable accomadation of religion, even those we disagree with, is a rational approach for a public university.
Whether this particular item is reasonable or not remains to be seen.