I'd never heard of this fight before, so I just looked it up. My interpretation is that he made that claim, Gebru responded by claiming that that was an overly reductionist view of things (given, presumably, the fact that biased assumptions could affect the coded assumptions as well as the training data), he maintained his opinion, and she felt frustrated that she didn't feel she was being listened to. I did not see her call him a racist, and I did not think either person was acting in bad faith; both seemed frustrated and unhappy that there was a disagreement.
Am I missing anything?