There are only two moderators, so I hope they can be forgiven for being late on a thread here or there.
I suggest you do as I did and flag the offensive flamebait comments. You need to click through to each individual comment (the nnn hours/minutes ago links) to see the flag link. I think you also need some minimum karma/reputation but don't know the specific number.
From the article: "Gackle and Bell are the only Y Combinator employees working on the site. In addition to moderating it, they maintain its technical infrastructure."
On the flagging, you may not see anything happen for some time after you flag a comment - or sometimes you may find that your flag was the proverbial "straw that broke the camel's back" and the comment immediately changes to [flagged] [dead].