Please don't pick the most provocative thing in an article or post to complain about in the thread. Find something interesting to respond to instead.
I personally found that venting about it did achieve something — disagreeing with folks in the comments prompted me to look up concrete numbers on how many men are likely to experience shame around their penis size.
I also think it helps nudge social norms towards making that kind of language less acceptable (both here on HN and elsewhere), and in a best case may have prompted some folks to reflect on how they speak and write.
Is that speculative benefit worth the conflict it created? I think so — when managed appropriately, conflict is a normal and healthy part of most human relationships. And IMO the wellbeing of ~2 million men is worth stirring the pot a little.
But you might disagree and you're the mod, so for better or worse your opinion is the one that matters here.