This is a thread about an email chain from the author of this article, in which the context of "HBD" is made quite clear. There's no useful parsing to do here. If the term has other, more benign uses, I'm not aware of them, and am not super interested in discussing them; here, to be clear, we're most definitely talking about a malignant meaning.
I'm not suggesting that the term "HBD" has other more benign uses. I'm suggesting that it refers to a body of thought in which various claims are made, and that you are focused on one of those claims, whereas our ancestor comment was focused on another.