I don't have access to the video, but Mary Lefkowitz is a truly admirable figure, going by her articles about her struggle against the "out of Africa" nonsense.

If academic fields like history really become about fabricating fictitious stories about the past, rather than trying to understand and interpret what really happened in the past, however difficult that may be, these fields will not be taken seriously and are probably fated to dwindling interest and influence. I hear English professors bemoan this in their field. Seldom do I hear them seriously consider why this might have happened and what role they may have played.