Either the HN link has changed or the article has been edited but the word porn is not found in the article.
It definitely referenced it when I first read the article.
I wonder what the motivation would be for removing that reference.
EDIT: Note that I am not user "runn1ng"; I am corroborating what they referenced about the contents of the article
EDIT2: They even mentioned three-or-so specific forums or websites, or something.
This adds speculation and sensationalism on top of an ill informed article. They even defined it as a 0-day vulnerability, when it is obviously not the case as explained by the article itself. Can't simply trust the quality of the information in there.