A line-by-line dissection of a writer's pposition is not an ad hominem attack. Slamming Jezebel for some supposed disposition for ad hominem is itself, ironically, an ad hominem attack.
That the person's who wrote the article above thinks that the author of the other piece is flawed, isn't central to the majority of their argument. Thus using that the person who wrote the article thinks that way, as a reason to dismiss the entirety of their piece, probably qualifies as AH.