Noteworthy difference being that, I believe, Riot employees are identified as such and their communication is public (in the eyes of Riot) not private.

In this case I think it might very well be a case of "The Aristocrats" humor like they mentioned in the article (CAH). I disagree with withdrawing the invitation based upon private communication here, but if it was publically visible and said "hey we're Harvard Students" I can understand Harvard's position and cautiously agree with them.

Well that's a very different matter, it was excessive offensive language to their customers (the other players) in game chat.