Yes SuperPets I was just thinking the same in relation to the OP's original question, why are other comedians defending him.
Because who's next, when the reasons given are so vague and contradictory? Free speech - except for when it's not. What does it take to completely ruin all the time, expense and effort of a Fringe run - just one complaint out of a room of how many? (Just two dates in JS's case, but it could have been a week, or three) A complaint about what exactly?
JS is one of them. They know him and the nature of his act. If I was a circuit comic I'd definitely be worried. There isn't the same distance they can put between themselves and eg Gervais or Chappelle, people whose stellar careers they will never have. This is probably a bit too close to home.
I think in JS's case there is no such thing as bad publicity. For others, it could kill their careers.