Some of the comments on that video
Her main talking points are super common Hotep propaganda, and they literally just make shyt up lol
I think you're confusing black nationalists with black seperatists. Black nationalism is closer to the Black Panther movement of the 1960's. Black seperatists are far far closer to white nationalists. I know that sounds weird but it's important to remember that these terms changed over a long time span along side the racial and economic climates of their respective times leading up to today, so they didn't exactly evolve into being mirror images of each other.
I have been seeing a lot of bad history from Black content creators regarding ancestry. One video I saw was from a Black man who claimed that Black people were the “original” native Americans and the people who we called native Americans today are actually Chinese migrants who came 500 years ago.