Found the thread on HN. Here's what (I'm guessing) a mod had to say:
It set off the flamewar detector, got flagged by users, and got downweighted by a mod.
The 'customer support of last resort' genre is common and not usually a good fit for HN [1]. If people feel this story is unusually relevant and interesting, I'm not sure I agree—long experience has taught us that one-sided articles like this nearly always leave out critical information—but I also don't mind yielding in an occasional specific case, so I've rolled back the penalties on this thread.
The issue from our point of view is not about story X or company Y—it's a systemic one: the most popular genres of submission (especially the rage-inducing ones) get massively over-represented by default, so countervailing mechanisms are needed [2] if we're to have a space for the more intellectually curious stories that the site is meant for.