Don’t be sad.
You said: “The author would have us believe that Mr. Robinson is a radical.”
Your intimation is that you doubt the allegation. Unless you have a clear enough understanding of Catholic teaching know if he is or not, you have no standing. Using the phrase “pathetically surreal” might be construed as inflammatory hyperbole, used to provoke a response. You got one, I guess.
The author gives me no reason believe his allegation because his article is filled with logical fallacies. Robinson may very well be outside the norms of Romanist orthodoxy but I wouldn't take this author's word for it. But then again that's not the point, is it?