I appreciate the effort to make these questions data driven (thank you for this database, @MDM ), but is left-right really the correct axis?
I thought Universities typically censor speakers for saying things that might endanger students (Doxxing critics, like Milo Yiannopoulis, or insulting them via hate speech or microaggressions, like Anne Coulter). Isn't there some other way of better measuring these tendencies than our traditional liberal-conservative matrix?
I think most Universities want the graduation ceremony to be pomp and circumstance, for the students and for their parents. They often seek out famous people to give a commencement speech, but they want the speech itself to be apolitical and pretty vanilla, focusing on how the graduates are the future and agents of change, etc.
Speakers ought to realize this, and act accordingly. As with any other large private ceremony, the speaker is supposed to i) keep it positive and ii) focus on the reason for the ceremony (the graduates). Their speech should not upset a good portion of the audience. This can be challenging for people who’s normal routine is to be very political (i.e. politicians) or edgy (e.g. comedians), but most are able to do it well, though a few cannot or will not follow social decorum and the results are typically disastrous.
Ultimately, though, being asked to speak
is a privilege conferred by the people holding the event. Like a private wedding or a funeral its a certain honor to be asked, yet if circumstances arise where a proposed speaker’s presence might detract from the event, the speaker should not be overly angry that s/he got bumped. The event is not about them, and their message (via their speech or their presence) should not overshadow the reason for the event.