I mean, they DO site their sources. It's in the description.

Satan has amassed an impressive list of biblical scholars ready to reveal the "standard stuff" taught in Christian seminaries: Bart Ehrman (UNC Chapel Hill), John J. Collins (Yale), Dale Allison (Princeton Seminary), Susan Niditch (Amherst), Ron Hendel (UC Berkeley), and Hector Avalos (Iowa State). This is established seminary curriculum about biblical history, biblical morals, authorship claims, and early Christianity — a curriculum never shared with the congregation.

They even show clips of those experts reading from well-cited books like Fighting Words: The Origins of Religious Violence or The Apocalyptic Imagination. You can go read those or others of multi-hundred page books shown if you want the definitive evidence, but in this case this wasn't about "here's the hard evidence". Especially since people don't change their minds if you present evidence like that.

It's supposed to consolidate information and help people start the process to questioning some things that maybe were once set in stone. Not fully change change minds or be referenced as a resource.