Two points. First, it's an article about an anecdote, so yes, I guess there's a degree to which that can't be helped.
Second, you're refutation is an anecdote. "I don't know any black people who internalize victimization." Well, I do. So where do we go from here? In fact, one of them appears to be Frederick Joseph.
More to the point though, it's not just about the internalisatin of victimisation, it's about the normalisation of the idea that black people are too weak to deal with simple non-incidents by themselves. The idea that it's reasonable and proportionate to spend hourse trying to ruin dsomebody's life because they made a snide comment at the dog park.
We don't accept expectations this low for any other group of people. I won't stand for black people to be portrayed that way either. Again, this is what equality means.