Unless the Biden campaign is really noticing something the rest of us aren't, it feels like a waste to try and expand the map at this point versus going full defense.
And that Trump event could not have looked more predictable. He really is obsessed with the black vote this year, and it will probably be for naught.
It is important optically to go on the offense every election. NC is the only Trump state Biden can realistically fight to flip in this national environment. Though strangely I think OH may be closer than people expect.