Early in the film there is an explanation of Wakanda and the fiction that Africans given mineral wealth will develop fantastic technology and that's all that separates them from being in charge of everything.
At the same time, their social structure seems to be based upon tribalism and a royal succession scheme which includes combat.
With the reality of Africa pretty easy to determine, it is clear that African mineral wealth has never turned in to a wealthy country except for South Africa which was run exclusively by Europeans. I kind of think tribalism is to blame for that. Tribalism is also a reason why slave ships filled up.
I think that's kind of a dangerous message compared to a Jewish guy writing about an orphaned space alien coming to earth with super powers to fight for "truth, justice and the American way".
I don't think there is anything wrong with black people having comic book super heroes but having an origin story like that is promoting division rather than unity.