Oh there is not to say I am religious, but I just got into a flame war on that thread tonight with a fellow atheist.
Besides a few extreme not credible nutcases like Richard Carrier no biblical scholar agrees he never existed. Bart Ehrman in the link above is an agnostic atheist so no hidden agenda. But like what the previous poster said about Ron Hubbard existing doesn't mean I believe in Scientology.
Less than 3% of people could read or write and even less in rural areas so this means writtings for anything were scarce.
Josephus, and others quoted Jesus existing and even the problem gospels and Gnostic manuscripts that didn't make the cut (don't believe he is God btw ) have similarity. Paul mentioned meeting Peter and James. I think James would know he had a brother. Also Paul heard of Jesus far away near The Turkey which means Jews passed on Jesus to his synagogue.
The fact the early Christians did not consider Jesus God as evident in the book of Mark disproves Richard Carrier theory of how he got invented.