No, it is not. Some texts do have inserts that say more than Joesephus intended, but the basic text is consistent with the rest of his writing. IAC, to reject the Gospels as evidence of his existence is disingenuous to say the least.
Twaddle.
I guess you haven't read much Josephus. I doubt there is a secular scholar anywhere who thinks the two passages that refer to Jesus are actually from Josephus. These are short passages inserted into the text almost as non-sequiturs. Josepehus was extremely long-winded. To think that he might only have given a few sentences to someone as import as Jesus is absurd.
ML/NJ