Bunyip
pro scapegoat
I think one simply has to make the choice, a conspiracy, a made up character, or references are legit from Josephus and others. I really think people are getting sidetracked with the religious aspect of Jesus.
Why would anyone need to make that choice? And wouldn't it be entirely arbitrary to do so? Wouldn't it make more sense to think that it is a little truth, a little myth and a lot of time?
Certainty is misplaced, there is no certainty in ancient historical textual analysis.