Well, I think all humans are racist to some degree, to not be so would be strange. But I don't think Donald Trump is a Richard Spencer type who thinks there is a higher and lower order of races. I think he's just boorish, in the past he essentially called Sweden a shithole iirc and I think it's pretty clear that he's an American exceptionalist who looks down his nose at all other nations who aren't America.
I don't agree that they are. You would never hear Donald Trump insulting African-Americans in such a way or any other race connected to America, he's a cultural chauvinist. That probably sticks in the craw of the subsection of the left who believes
all cultures are equal but those people are fucking idiots anyway.
You seem to be the dumb ass here if you don't realise the context of such a statement. Do you really think Norwegian culture and society is no better in at the very least what it has achieved than African ones? Africa is one giant backwards disaster zone with tribal warfare and so on, Norway is a modern advanced social democracy.
But no, for racialists like intersectional leftists and the alt-right it's all down to race.
Trump may be post-literate (as in he doesn't read) but the left as you say isn't qualified to speak on the value of language anymore than anybody else is, especially given the ferocity they have largely wrenched context from society. In fact this might be just the example of that very thing.
Trump's context was that Norwegians come from a culture of well-educated people with a history of liberal values and so on. Africans you cannot really say the same for.
It might be uncomfortable for people to face.