American black sorta kinda is, and I think Americanized thought leaders on all this stuff are muddying the waters immensely.

> sorta kinda

I think the muddying consists of the fact that conflating physical traits with cultural identity means that any criticism of the given culture can be and is frequently labeled as racism.

They are; not one group but many (still distinct from "non-black").

I don't think it's possible or reasonable, particularly in the US, to assume or associate cultural identity with physical traits.

They very, very much are.