Source? I was accused of a couple things (not plagiarism) at my university and was absolutely allowed to present a case, and due to a lack of evidence it was tossed and never spoken of again.

So no, you don’t exactly get a trial by a jury of your peers, but it isn’t like they are averse to evidence being presented.

This evidence would be fairly trivial to refute, but I agree it is a burden no student needs or wants.