To show the silliness of this nomenclature, whenever I hear the A-A term bandied about, I am sure to refer to myself as a "British-Irish-German-Scandinavian-American."
Friends can refer to me as a BIGSA and I won't take offense.
I'm sure most black folks of my generation blanched at first hearing the 'A-A' term. It used to be a widely known fact that blacks in this country are far from racially pure. Most of us are mixed with European and Native American of varying degrees.
If anything, we're a New World people, very distinct from Africans. Lord knows, we've lost all cultural memory and connection to Africa since our ancestors first came here. Nothing more than a romantic notion remains.
For myself, my paternal DNA line goes straight back to the Borders of Scotland. What am I supposed to do about that? Ignore it in favor of some untraceable branch of my lineage that originated in Africa? Why? Because I've got brown skin?
Nuts.