Hilariously, another person has entered the fray on Douglas' video claiming that not only was Paul not real, Paul and Apollonius were both based on Flavius Josephus, the Jewish-Roman Historian who wrote Antiquities of the Jews
and The Wars of the Jews
(a book about what happened at the fall of Jerusalem).
Furthermore, this other chap has gone on to state that 'Jesus' Mary, Simon Peter, and nearly everyone else in the NT weren't real either.
This only goes to show how such ridiculousness as Douglas' can lead people down such stupid paths, it boggles the mind.
Gotta love it actually. It's actually quite funny