OK, but I was limiting my remarks to the OP, which I think is easily refuted. The problem with Josephus is that he, like other contemporaries, was writing well after the events in question. So the OP reduces essentially to the claim that Jesus probably existed because Josephus believed he existed. I do not see that as sufficient evidence for historicity.
I don't see it that way either, but 'sufficient evidence for historicty' can mean so many different things. I'm certainly not compelled to any particular belief by the Josephus quote. In the many writings of a life-long Jew, there are two abrupt mentions of Jesus, at least one of which claims that he rose from the dead and 'was the Christ'? And he wrote this some 50 years after the events, giving no source? That's fishy enough to have little effect on my opinions about Jesus.
I'm also struck by something else which I haven't seen mentioned so far. If this Josephus quote really is legit and proves Jesus' historicity, as the OP claims, then it causes a major problem for the historical crowd. Josephus speaks of a Jesus who rose from the dead and "ten thousand other wonderful things concerning him."
But if so, why no mention of Jesus from the contemporary writers? It's been explained to me again and again that Jesus was never mentioned by contemporary writers because he made no real waves. He was just some lowly preacher.
But if Josephus is right, he describes a Jesus who would have been noticed.
So I think there's a problem no matter how we see it.
I think that the most convincing evidence for the historicity of Christ comes from Paul, who allegedly made reference to James.
Yeah, I think the James mention is the strongest item propping up the historical Jesus, but I don't know enough about it. I can think of lots of possible explanations, though. Paul may have been trying to strengthen his own authority by claiming to have hung out with the Lord's brother, for just one guess.
Josephus could simply have taken what believers claimed about Jesus at face value.
Sure. What if a Christian copyist simply deleted the words, "The Christians claim that...." The deletion of 4 words could explain the whole thing away.
Even the writer of the paper admits that "opinion on the authenticity of this passage is varied."
Who knows? Most of these arguments for and against historicity depend on large doses of speculation.
The historicity of Jesus is apparently much more important to some people than it is to me. I can't embrace an historical Jesus on the evidence as I've seen it so far.