Thats true. Blacks have been slowly softening for Dems - but still very reliable.Look at his numbers with black voters. While still in the positive they are well below the percentage of the vote he received. While part of the displeasure of course could be they think he's not progressive enough these folks thought he wasn't handling issues like the police, voting etc. as well as he should. Ultimately in our system of gov't the President only has so much power but nonetheless they are the ones who receive all the credit/blame.
Many black voters thought Obama wasn't progressive enough yet still gave him positive approval ratings, which far fewer are doing for Biden.
I haven't looked at his numbers by blacks.
He's getting killed by Hispanic numbers as well -some down in the 20's

I wonder who has more viewers???