Tricky, must admit I don't know enough about this issue.
You can regard him as an icon of the defense of freedom of speech, but what has that got to do with the honors system which is anyhow a totally archaic concept anyway 
You can also say that insulting the prophet of a major world religion, is not the most clever of moves anyway
did the satanic verses really bring any enlightened debate about Islam? or was it simply viewed by almost every Muslim as a slap in the face for their religion?
Whilst the Islamlic world obviously is to be blamed for its reaction, there was a sense of the inevitable about that reaction and it resulted in Muslim communities closing in on themselves and feeling threatened and isolated.
Imagine the reaction there might have been if instead of the Satanic verses Salmon had written "The Pope molests choir boys" !
Some times freedom of speech needs to be tempered with a sense of consequence of the use of that right. The world might be a slightely better place today if that book had never seen the light of day.