What do invented saints tell us about Christianity?

[mordant]

Hardly. He's just a historical Jesus proponent, which has nothing to do with a person being a believer.

He does seems zealous in "defending" Christianity in every way he can to the point of being completely wrong.

For instance first thing on that page he arrogantly attacks Aron Ra for saying how St. Augustine considered Earth to be flat. But the thing is that Aron didn't make a wrong claim, I mean maybe he wasn't right but certainly he wasn't wrong, and especially that wrong for this guy to make a stupid mockery show à la Kirk Cameroon and the banana.

That is why I consider him an examplar of the atheist Jesus historicists I have encountered (admittedly, a small sample). As I said ... they like to be right, and smarter, and so forth. Which is ironic because they sometimes also critique, as this one does, "new atheism" as being too strident.

But I have no reason to disbelieve him when he says he's an atheist, particularly when he rejects the Jesus mythos as representative of what really went down.

Pedantry comes in many forms, and regrettably, atheists aren't immune to it.