I'm not backing down from anything. There are no doubt radical, hate-filled individuals who are actually duped into thinking that suicide bombing and the deliberate killing of civilians is consonant with the teachings of traditional Islam, just like there are no doubt radical, hate-filled individuals who are duped into thinking that Liberation Theology is consonant with Christianity. In either case, they might think they are Christians or Muslems, but in reality they are nothing more than useful idiots.
Yes, but if it barks like a dog, walks on all fours like a dog, and is going to bite you like a dog it does little good to argue that it might be part dingo.
It is like a Jew in 15th Century Spain saying that no “true Catholic” would subject them to the inquisition, so there is really nothing to worry about.
Islamic clerics call for terrorist action. Terrorist who are Islamic respond by committing terrorism, and when they are explaining why, say that it is their view of Islam that prompted them to act. You can argue till your blue in the face that they aren't “truly Islamic”, but that is tragically beside the point.
The terrorists think they are Islamic, their cleric thinks killing Jews and Americans is an Islamic act, and a large portion of Islamic society applauds their actions.