Parent post was talking about the Democratic primary, not the presidential election. Hatred for Trump doesn't explain why Biden would do well among black voters in a race that's not against Trump.
Biden is going to be the most pro-Black President in history, even more than Obama (due to a better political climate).
He literally ran his campaign as a repudiation of Charlottesville and White supremacy. (See: His announcement speech.) Biden's VP is Black, and he personally insisted on that.
Racial justice is literally the core of Biden's platform, and he'll deliver for Blacks (and against White supremacists) like no other President in history.
But yes, miraculous—or maybe Americans didn't want to vote for another President who is clearly comfortable with White supremacy? Biden's entirely campaign was a repudiation of that worldview.
