I disagree. It is the culmination of African, Caribbean and Creole cultures..................
All culture in the USA is a culmination of cultural influences from other countries, mixed with things that arose within our borders. But that doesn’t mean it’s the same here as those places of origin.
Obviously not, because Black American culture is different from Cuban or Jamaican or French Antillean, or Brazilian or Panamanian culture.
Clearly, the "American" or "Anglo" component played a role in making Black American culture different from African or Caribbean culture.
That is something that one could argue against those who say that White influences played no role at all in making jazz or blues.
I'm wondering why somebody would take that side of the argument and deny that Black (or White) American culture didn't come from a variety of sources and a mixture of races and ethnic groups.
Similarly, what we think of as Mexican music owed a lot to Germans and other White Europeans who brought their music and instruments to Texas and Mexico.