A couple of quick points.
As I have mentioned before, I think the reason they are doing this is to prove that Muslims react viciously and violently to any discussion of their religious dogma no matter how truthful or accurate it is, if it is not done in a manner sufficiently worshipful and submissive (in the case of non-Muslims discussing it) for Muslim sensibilities. Remember the Islamic definition of slander is not ours.
Secondly hadiths and sharia law is ignored in his reasoning, depending only on Koran. In any case, the results of this experiment, while predictable, are still beneficial. People need to see that Islam is not just another relatively benign religion but an intolerant and domineering fascist ideology that must be excluded from Western democratic institutions.