Theists: What is the most compelling argument you have heard for Atheism?

[Neo-Scholastic]

That is the wrong question. How do the independent testimony of the Synoptics, the Johanite communities, letters of Paul, records from Secular sources, documents of the early Church, and Archeology support and reinforce a historical picture of the 1st century, one that includes a a specific man, Jesus of Nazareth?

I'm indifferent to the historicity of a non-miracle-working Jesus, I don't have a bet placed.

But what's called 'evidence' for the miracle-working man seems to not add up to more than 'lots of people believed he was real and really worked miracles, so he was real and really worked miracles'.

Sounds like you've already decided that miracles cannot happen so you edit out those parts. Isn't that kind of like the file-drawer effect?