Because this article, and Dr. Kobrin (in her book), claim that militant Islam derives its psychological power from "widespread child abuse" and other deep social pathologies. These pathologies are contrary to human nature, and, for this reason, can only flourish in a culture of secrecy. American culture (including "pop" culture) cannot provide such an environment.
If these practices are brought to our shores, they will inevitably be dragged out into the light by our media culture. The backlash that will result will be furious.
If they are not brought to our shores, militant Islam will not be able to take root here; it will remain an evil that must be re-introduced from outside.
Kids are kids. They rebel against their parents. They certainly don't want to be abused, mutilated, etc.
(steely)