Aah okay, that makes sense. Paulogia does however put forward at least one more person having an experience, possibly due to a grief hallucination. If I remember correctly he suggested Peter being the one to have it.
I also don’t remember him ever suggesting that the empty tomb is an actual fact in need of explanation. I think he sees it as likely that Jesus would have been unceremoniously put in a mass- or ditch grave as was common for crucifixion victims. The tomb would then be a detail added on later by other christians, likely through narrative evolution.
I may misremember some of it though, so maybe I should go back and rewatch as well.

Oh nice! :D

I think it is more likely that they refer to the minimum witnesses argument put firth by a youtuber Paulogia. He has done a lot to popularize it as a response to the criticism that sceptics have no singular explanation for the proposed evidence of Jesus provided by the spread of christianity and the accounts of early cristians.