We (not sure if you were included) definitely discussed this here. Just over four years ago but I am absolutely sure. I said at the time Biden should have simply made his choice as the best available pick. Being black, and being female, could have factored in to that, politics being what it is. But he didn't do that. He virtue signalled in not a good way IMO.
That's on him, not Harris. I'm sure she was happy she was chosen but would have preferred to be chosen as the best available candidate, not the best available black female.
Correct me if I'm wrong but choosing a DEI candidate doesn't mean you won't get the best candidate, it just means you've excluded other candidates that might have been a better choice.
For my part, I didn't like the pick at the time, nothing to do with the fact she was black or female, but like it now...also nothing to do with the fact she's black or female.