It's so on-the-nose backwards it's not hard to imagine it's deliberate rather than a complete lack of awareness.

The, now old, saying is SJWs always project, but I think more accurately it's "deflect". They think if they can just be the first to accuse someone else of all their own failings they can control the conversation and steer attention away from themselves. These are people who have long since learned to abuse open and tolerant society by always attacking first, unobserved and unprovoked, and always immediately afterwards crying foul and demanding everyone act civilly and peacefully once they have pre-empticely extracted their pound of flesh.