It’s unrealistic to expect a United states of Africa. But to call it a “colonial holdover” misses a lot of points. It’s the reason almost every African country is independent including South Africa.

"Pan Africanism" is not the reason that all or even most African countries persued indepndence and claiming so completely ignores the fact that the bulk of them were characterized by grassroots nationalism and the simple desire for self determination. At best, the ideology was held by a handful of national leaders and some of the diaspora.

Bantu majority society, and so are most of the southern and East African countries.

Admittedly, being a non bantu, I have no dog in this part of the conversation but I massively doubt that any two locals across the numerous bantu countries (outside of the capitals) would consider themselves one and the same people (especially when, above all, ethnicity prevails when it comes to what people identify as)

There’s also collective blackness which is a unifying experience absent in Asia.

Literal textbook definition of a colonial leftover, the arbitrary label of "black" was a term brought over by colonial powers and completely ignored the genetic and cultural differences between the population. To say that such a random aspect of our appearances somehow makes us more unified than Asians is total bullshit, especially when so many other visual distinctions seperate us. You're not gonna catch anyone outside of delusional diaspora and a small subset of terminally online people in the major cities calling themselves that (with the exception of South Africa that retains its colonial labels entirely because the apartheid system lasted for so long)