I fundamentally disagree. If the content can be managed to be culturally sound, that is effective to disseminate globally. If Islamic countries do not want to see images of Mohammed, that is effect in maintaining other content without blocking the site. Same applies to other religious imagery, political imagery, sexual imagery, and whatever else. The filter is for images, and while pictures are louder than words, we can at least have the words while maintaining cultural integrity.
The end game for this strategy of giving every (sub-) culture their own subset of the images and/or text (when every medium agrees all at once), and where everyone lives past each other is actually well known and well studied: http://en.wikipedia.org/wiki/Pillarization
Due to my knowing the historical context, I would actually prefer that people were confronted by cultural differences and have a healthy dialogue about them, to prevent or mitigate pillarization.
Then again, that's a deeply held cultural belief in the part of the world that I live in, and you might not share it. ;-)
sincerely, Kim Bruning