I will admit I'm not familiar with the professor or his satirical approach, but the following thought came to mind after reading your post.
I think in today's world if you do not have very defined position on something then you are ridiculed by the mob. Since he is using satire then I would assume most don't understand immediately he gets attacked because the mob percieves that he does not have a defined stance on a particular issue.
Also you are clearly in the minority if he is forced to hire security from time to time haha.
Oh yes, such is the high price of being agnostic a true agnostic. I think in this sense neutral positions of balance get the raw end of the deal .