Either we have several centuries of incredibly dense and blind church fathers, or we have an interpolated forgery. This Eusebius seemed just like the man for the job when it came to 'uncovering' the Testimonium. We know for a fact that Christian hands have made extensive alterations to the works of Josephus in order to substantiate their historical story of Jesus. The works of Josephus are tedious and exhaustive. They comprise nearly 20 books.
Whole pages are devoted to petty robbers and obscureseditious leaders.
Nearly 40 chapters are devoted to a single king. Yet, Jesus is dismissed with merely a few lines. Given that he was himself a Jew, and was writng for a pagan audience who would not understand the meaning of the word, this is rather suspicious. That he habitually avoids the use of the term throughout his writings, except in the Jesus passages, makes those passages all the more suspect. While this point has been debated, it appears that the Testimonium breaks the narrative thread in the place where it occurs.