I watched the entire video. I'll be really interested to read how the story develops. I subscribe to BAR (Biblical Archaeology Review), and I'm sure there will be articles about this.
I came away with the impression that there will be significant criticism concerning the find. It was found in a rubbish pile of debris thrown away from a previous (1980's) excavation of the site, so it was not found in situ. That alone will really call it into question.