[antidesitter]

See my top-level comment. There is a historical consensus on Jesus’ existence and some basic facts about his life (with wide disagreement beyond that).

And Thomas Sheehan, the philosopher and presenter of the podcast you linked to, accepts the historicity of Jesus.

[owens99]

This article does a great job of explaining why you should question that consensus.

https://www.richardcarrier.info/archives/5553