This is one of those things where you are both correct but miss the point. Yes, this sort of language is not tolerable. Yes, it's also the sort of generalizations the author is railing about. Absolutely.

However, let's take the story at face value for a second. What occured between this person and the people around him wasn't just inappropriate workplace conduct, it was systemic and demeaning in a way that is hard for someone to get if they're not the subject of it. Most people are not wired to take this kind of abuse in a sustained way. This person is hurt, they're confused, they feel powerless, and they're lashing out.

So I think we can probably get to the victim's fucked up statements after we let the outrage over the institutionalized racism that the story consists of simmer down, don't you think? I've said some pretty dumb, mean things when I'm suffering from emotional trauma, haven't you? At least we have an excuse and we can apologize and say, "That was my anger and frustration, I know it's wrong."

But perhaps what makes me most angry is that other members of this team were complicit in this treatment. They're not stopping it, they're not complaining, they're not resigning, they're not objecting. It's terrifying.