Fair enough. I think a lot of these concerns are based on misrememberings and misunderstandings. I think it would have been helpful to mention when you posted the link that you had misremembered it, though.
The user “causi” might as well delete it. The whole premise of their top-level comment was characterizing a “racial sensitivity guide” of which they have no adequate recollection, and cannot provide evidence that it even existed as they described.
A more cynical person might say they’ve injected a red herring into the thread, wasting others’ time.