I don’t disagree with this at all, but I think you’ve only reiterated my point. Of course people have control over their own feelings, resentments, etc, which is what I’m saying in the article. I’m not “blaming” history for the rise (and rise is the wrong word, there have ALWAYS been identity politics), I’m explaining that some people legitimately feel resentful because historically speaking, they’ve been screwed over, and that mistreatment continues into the present day.
So while those who identify as X, Y, or Z, and organize politically around that identity are responsible for their feelings, they develop those feelings in unfair circumstances, and are reacting accordingly or appropriately.
Or so I believe.