Indeed when one talks about authenticating written reports in antiquity the stakes are usually not as high as "eternal life".

Somehow I think if I had heard you say that IRL, it wouldn't have been nearly as funny; but the mental picture in my mind as I read this was hilarious! Now to return to being serious, the majority of the Bible is over and done with before "eternal life" is introduced as a topic, much. The "stakes" are better represented as, bringing your cattle in out of the field, or not. As in, those that believed God before the plagues of Egypt, brought their cattle in, and they were spared. Those that didn't believe, didn't; and lost their cattle. Oh, for the simple life!

Which is why the story makes such a great illustration of what are really pretty abstract ideas.
So, when someone writes about Jesus' "miracles" decades after anyone who was around would have "witnessed" them it would be indistinguishable from similar stories of other religious non-Judeo-Christian miracles. But for some reason these are not used to justify why you are not a non-Christian.
Yes well, this "some reason" you refer to is called "FACTS." Which you have mis-represented. The eye witnesses recited the stories DAILY, in the Temple in Jerusalem, before a congregation of 1,000's. For 30+ YEARS. No going back to change anything! People would have noticed.
And then that element of Liturgical worship wasn't written into the Gospel to somehow make it credible or respectable; it was written down solely because
other, new Churches, were afraid of messing everything up and requested a written copy. In that time and place, personal testimony from a trusted source was preferred over anything written.
(And if the concern turns to the compilation of our Bible, it is merely collecting the various letters used in the various Churches, so all had access to the entire body of work, which was not readily available to anyone prior to that.)
So when we look and see there is really no contemporary written record about Jesus that is trustworthy (The Josephus writings are thought by most to be later forgeries) we are tasked with questioning the "synoptic" gospels.
Nope. This is purely an anachronism.
But the question of whether Jesus was real or not isn't particularly important unless you have reason to believe that belief in him is of paramount importance viz a vis "eternal life". Jesus represents the most important man in the world (if not the most interesting man). So why should his existence be as poorly documented as just about anyone elses?
This is a very interesting philosophical question! It also opens a door to the very heart of G-d. Actions speak louder than words, so what does it say, that He was born in a manger?
But Jesus is a different story. If Jesus were found to not exist then there's serious repercussions. It basically destroys the concepts underlying Christian salvation, eternal life etc.
Jesus is, hence, a being whose existence must rise to a much higher degree of evidence than anyone else who has ever lived.
Again, you impose an anachronism. You must humble yourself to the accepted measures of the day. And you are surrounded by entire cultures built upon what it is you are questioning; not just a few odd rogues such as myself. And this is really what is at the heart of the strange, ongoing, lingering issues such as Cr / Ev, Faith vs facts, etc.
As a species, mankind wants to create his own reality exclusive of God; perhaps like never before, perhaps equivalent to Babel's tower. (I can't be sure which.) This is at least spoken of as "the great falling away," and I do think also 666.
If Jesus' existence is as "inconsequential" in the evidentiary department as any other historical figure of antiquity, then he can stand or fall based on that. And fall is just as likely since if he is as inconsequential as any other mere human who has ever existed then it won't matter if I believe in him or not.
But clearly no Christian feels that way. That is why the presumptive forger added in the Josephus stuff. They wanted more "proof" of Jesus.
And this is what makes the faux pas in the Gospels so significant! The authors were aware of the problems, but DID NOTHING to correct them, instead choosing to relate the info as best they could.
They didn't need "more proof" of Jesus
Look at the writings of historians of ancient times: Pliny the Elder. Because he wrote about Atlantis do we automatically assume it was real?
Herodotus wrote about "flying snakes". I don't believe there were flying snakes. Sure maybe there were, who knows? It is highly unlikely. But would it change everything in all of the universe if it were found that Atlantis was real and that flying snakes existed?
Flying Snakes in Navajo and Hopi Lore - YouTube
That's myth, lore. Modern day reality:
Flying Snake Mystery Solved - YouTube
Atlantis is not quite so certain:
National Geographic - Finding Atlantis - March 2011 - 1/4 - YouTube
For most of our lifetime, Pontius Pilate was considered a fictitious character. Now, we know he was as the Bible portrays him.
But it will take more than the "ordinary" evidence reserved for mere mortals to support the "extraordinary" claims that this one man, who existed but left so little trace

This very website refutes your "little trace" argument
