Hahaha have you been anywhere else on the internet?
I only started posting here very recently and am a bit of a refugee from another forum (unrelated to parenthood) where personal insults, sock-puppetry, trolling, ganging up on new posters etc. had become endemic, largely because of the atrocious way it was moderated (they outsourced it to people who didn't have a clue about the community they were serving). If you wrote "tit", the whole thread could get removed. Other threads and posts would be removed for no apparent reason and an explanation was never, ever given. Meanwhile, it was apparently perfectly acceptable for people to call each other "retarded" on a regular basis ... this was an 18+ forum, BTW, but you'd never know it.
So, I started looking round for another forum to hang out, thought of MN because I happen to be a mum and (once bitten, twice shy) had a good nose around before I started posting, including a couple of threads in Site Stuff about moderation decisions. What a breath of fresh air this place is! Honestly, this is by far the most polite forum I've visited, even the AIBU threads and the moderation here, IMO, strikes a pretty much perfect balance between keeping things civil and allowing people to speak their minds. What's more, MNHQ are willing to discuss their decisions with the community.
I haven't looked at the thread you refer to. I'm a SAHM and I can see that the comment you quote is a bit of a personal insult, but it's really not worth all this fuss.
Appreciate what you've got here, I say :)