Perhaps. Matt Stone & Trey Parker have put out a statement. I watched it online yesterday and I thought the bleeps were part of the “in joke.” I’ll spoil the episode for you by noting that it wasn’t even Muhammad in the bear a suit. Additionally I don’t get why people are that that scared, the threats were made by a group that’s very close to literally being in a basement. On the other hand, remember during the Salman Rushdie affair that translators were killed, so perhaps there’s reason that a corporation would want to stay on the safe side (one could imagine civil lawsuits if someone did get hurt against the corporation).
On final thing, the South Park episode in question depicted Moses as a dull artificial intelligence, Buddha as a cocaine junkie and Jesus as a habitual viewer of internet pornography (at least that’s Buddha’s accusation, which Jesus does not deny, rather, he minimizes its equivalence with a drug habit. I think Jesus’ logic is spot on, and am leaning toward Brit Hume’s dismissal of Buddhism on account of this interaction). There are of course Jewish,* Christian and Buddhist extremists in world. But most people judge that Jews, Christians and Buddhist are less liable to take violent action to defend the dignity of their faith than extremist Muslims. I think that’s probably a valid assessment, and I think that points to the fact that not all religions can be made equivalent in the nature and numbers of violent radicals. Why that is is a different question.
* Because Judaism is operationally coterminous with an ethnicity, at least by self-conception, I have seen some attempts to accuse those who have anti-Jewish religious views as anti-Semites. In general anti-Semites have anti-Jewish attitudes in regards to the religion, but the inverse is not always so. Some Muslims have started imitating that strategy, accusing plain anti-religious folk like Richard Dawkins of being an Islamophobe as if he is racist.