But he does have a point that a portion of that particular passage was likely embellished.
However this one, also written by Josephus, is considered unaltered by most all scholars.
Jewish Antiquities 20.9.1
"But the younger Ananus who, as we said, received the high priesthood, was of a bold disposition and exceptionally daring; he followed the party of the Sadducees, who are severe in judgment above all the Jews, as we have already shown. As therefore Ananus was of such a disposition, he thought he had now a good opportunity, as Festus was now dead, and Albinus was still on the road; so he assembled a council of judges, and brought before it the brother of Jesus the so-called Christ, whose name was James, together with some others, and having accused them as lawbreakers, he delivered them over to be stoned."