Cardinal uses Science Fiction as an insult

Via Google News, Cardinal Egan: Jesus theories 'science fiction': SouthFlorida.com

A Cardinal (Edward Cardinal Egan) was having a rant about "alternative theories about the life of Christ". He said "What he [James Tabor] has to say is science fiction out of control."

It would have been so much better if he had just said "...is Science Fiction." Full stop. Why does current Science Fiction have to be "redefining the genre" (BSG) or "out of control" or "breaking new ground"? It's all Science Fiction, like it's all just Rock n Roll.