Slop.

Preposterous and irrelevant.

No, there's a point here. While history might be unable to converge on a lot of figures who actually lived due to poor recordkeeping and the inherent unreliability of a predominantly oral tradition, I was pointing out the alternative possibility that he was a composite figure based on multiple dudes who might've shared superficial similarities with the fictional character in the book but which can't be localized to a specific personality. The idea that that there was a Real Historical Jesus that was the prime mover for the ideological offshoot that went on to become Christianity ignores the more reasonable possibility that the movement arose as the result of the coordinated actions of a lot of people who converged on an account of a life that could have happened

We don't need to assume a guy got killed because there are multiple sources for Jesus's crucifixion by the Romans. There were definitely hundreds of itinereant preachers who could've spawned religions. One of them, Jesus, led to Christianity and a complex web of mythologies were constructed around him after his death.

The non-Christian sources all leave a lot to be desired. From the RationalWiki article:

The Jewish historian Josephus is claimed to be the earliest non-Christian to mention Jesus, in his Antiquities of the Jews (ca. 93-94 CE) with the two references being referred to as the Testimonium Flavianum and the "Jamesian Reference". However, there is much debate regarding how much of the Testimonium Flavianum (if any of it) was written by Josephus as there is no reference to it before the 4th century.

In his Annals (ca. 109 CE) Tacitus gives a brief mention of a "Chrstus" (generally read as "Christus" but in reality it could just as easily be read "Chrestus"), in a passage that shows evidence of tampering and contains no source. Also, the entire section of the Annals covering 29-31 CE is missing: “That the cut is so precise and covers precisely those two years is too improbable to posit as a chance coincidence.” His account is also at odds with the Christian accounts in The apocryphal Acts of Paul (c. 160 CE) and "The Acts of Peter" (150-200 CE) where the first has Nero reacting to claims of sedition by the group and the other saying thanks to a vision he left them alone.

Pliny the Younger was a Roman official who wrote innumerable letters. In one (ca. 112 CE), he references "Christians" (but not Jesus), and his "Christ" could have referred to innumerable other "messiahs" that various Jews were following.

Most of the Pauline Epistles were indisputably written by a dude named Paul in the Levant a few decades after Jesus's death. He wrote about James. He wrote about actually existing churches and conflicts. These were not constructed a century later (except for the ones that obviously were,which has been determined via textual criticism and analysis) - they are much closer to contemporary than most classical historical figures! Just because it is in the Bible doesn't mean it's automatically fake. It is a corpus to which we can apply historical criticism like any other, not some exceptional fabrication.

In addition to Paul writing about events two decades after the fact and never actually meeting Jesus,

Paul had no knowledge of Jesus' early life, just his claimed ultimate activities, and his teachings sometimes seem at variance with those of Jesus in the Gospels. He also does not mention the handful of churches that arose in Jesus' name, but having nothing to do with his own Christianity. Although Paul writes about numerous other people seeing Jesus, he provides no corroborating evidence or means by which they could be identified. He does (e.g. in Galatians) speak of meeting some of the Disciples, but, as the John Frum cult shows, even the mention of James (the Just) as Jesus' brother doesn't mean much as John Frum got Prince Philip, Duke of Edinburgh (who has only sisters) as a brother only 17 years after the first record of his movement.

Just because he talks about real stuff doesn't mean he can't also be making stuff up or embroidering actual events with fictional details. The existence to churches dedicated to Jesus also doesn't really say much, since there are a lot of churches dedicated to fictional entities.