> I'd go farther and say that it is disheartening. It also seems to be completely aligned with the post-modernist way of evaluating/describing the world.

Nothing to do with post modernism, it's a version of Marxism that is compatible with capitalism. Post modernists can't be ideologues by definition. Intersectionality is very much an ideology. People who believe that don't ask question, they do finger pointing and public shaming to try to change and control public discourse. It's very reminiscent of the soviet union era, except it doesn't come from the state but a group of people that hold a certain power of influence, ironically.

Labels and definitions are hard to agree on but whatever you call it, the stew of identity-politics, marxism, socialism, post-modernism, intersectionality, and so on that seems to be taking hold on the progressive-left is pretty toxic, IMHO.