"Categorize experience"? That kinda sounds like that generalization I was talking about, which is not what this is here. It's a simple matter of "people in this group have a higher likelihood of exhibiting this behavior than people of other groups". Simple observation. It's not saying that only people in this group exhibit it, or even that all people in this group exhibit it. Just that more do. It's not even necessarily claiming direct causation. Maybe people in that group have experiences that make them more likely to exhibit that behavior, so that would make it environmental. But the cause is another discussion.

As for "look for problems at an individual rather than systemic level", I'm afraid that I don't know what you mean here. I wasn't talking about any problems. Are you referring to the injustices themselves maybe? Because that's a whole other discussion too. I'm talking about psychology, not politics or economics. (And while it's not relevant, yes, I am acting on it, and far more systemically than most people.)