A public university is the voice of the state.
I believe that there should be a brighter line of separation between state and religion even than there is.
For example, the original Pledge of Allegiance did not include “under God.” That was added in the 1950’s. Not only did this change insert a deity, it also broke up the powerful grammatical and semantic order of “one nation, indivisible.” I think God does not belong in the pledge. Or on the penny. One can be a very proud citizen of the United States and believe strongly in the United States’ system of government, without believing in God.
I enjoy putting both a Christmas tree and a menorah in my own house, but I do not think either belongs on public property. Courts have ruled that public entities like public schools and towns can have one as long as they also have the other. Well, okay, but who says everyone is either Christian or Jewish? What about Buddhists, Muslims, Hindus, Jehovah Witnesses, and atheists? Is it not also their school? Their town? Their nation?
One can wish students well and a joyful season without bringing God into it. One can decorate a school lobby or a town green with religion-neutral seasonal decorations like bright lights, snowflakes, snowmen, etc.
As far as private beliefs go… people can believe whatever they want. And if some random person on the street wishes me Merry Christmas or Happy Easter, I just take it as they are being friendly and assuming everyone believes what they do, and I just smile and say Merry Christmas back to them.
But religion does not belong in the public sphere. Public entities- schools, courts, towns, our nation- belong to ALL their citizens, not just the majority.