One reaction is: Why deliberately stir up anger with what some people consider to be blasphemy? There's merit in that, and I gather the Mayor was pretty annoyed at having trouble show up on his watch. I don't generally go out of my way to provoke people. It doesn't change any minds, and generally doesn't do anything else useful either.
Another way of looking at the conference is that it was intended to be provoking, but not principally provoking Muhammadans. I haven't heard that they are particularly plentiful in that neck of the woods. The target of provocation could easily have been the powers-that-be in the USA which are widely viewed (perhaps not by coasties) as compromising American values in deference to alien sensitivities. The obvious rejoinder is that our rulers don't have the luxury of getting angry over small things; they have to keep our allies happy in order to preserve our options and interests in the world. This is a logical claim and would be believable if there were a shred of evidence to support it.
Yet another way of looking at it is that the provocation was successful in removing two enemies and helping identify others.