The section on cyberharassment is really troubling, although with the current vitriol on AI I'm not surprised. Do wish the author mentioned the name of the site though, if only so I can avoid it (and not in the Always Sunny "oh no terrible! where?" way)
I was as curious as you were. Turns out there are only so many popular threaded discussion sites in the vein of HN on the Internet, so an educated guess is all it takes.
Without making judgment on the actions of any involved party, I do wonder why the author would choose to bring up this incident and submit it as part of a story to a site where there is a significant overlap in readership.