Original sentence: Moreover, according to his critics, the fact that he does not exhibit any such fluency in English during oral interviews, and that his writings have contained basic factual errors with regard to Iran (which a native to Iran would not make), further fuels the speculation among his critics that some or all of his published writing is in fact ghostwritten.While this claim is hotly disputed by Taheri supporters, critics have alleged that Taheri's writings contain numerous fabrications  and self-serving material developed by his neo-conservative handlers associated with Benador Associates
Edited sentence: Critics have alleged that Taheri's writings contain numerous fabrications.Moreover, the fact that he does not exhibit any such fluency in English during oral interviews, and that his writings are rife with several factual errors with regard to Iran (which a native to Iran would not make), further fuels the speculation that some or all of his published writing is in fact ghostwritten.and self-serving material developed by his neo-conservative handlers associated with Benador Associates