...if this was addressed in the video, since I haven't had time to watch much; but if genetic lineage from Abraham is key to being a 'chosen person', what about all the non-Jewish descendants of Abraham, through Ishmael, through Esau (Edomites), through the ten tribes of the northern Kingdom of Israel who many say were dispersed into ancient European regions and peoples. The descendants of the southern Kingdom of Judah (Judeans, Jews) are only a small percentage of Abraham's bloodline. People who don't even think they are a descendant of Abraham, from various African, Eurasian, American regions may be quite mistaken.
But spiritually, I don't think this matters: under the New Covenant, there is neither Jew nor Gentile. Of course, those who don't believe in the New or Old Covenants will not care.