Plural. The fact that the multiple universities admins think it a good idea to invite those speakers shows how out of touch a whole class of people is with society. As of yesterday evening there were three reported booing events on commencement speeches, all having AI as topic. In one case they let AI read out the name of the students to enter the stage for their diploma and the AI forgot a couple: https://www.youtube.com/watch?v=IFCNd61FCzY