Earlier this morning, I came across this question. As well as multiple downvotes, it had attracted a comment consisting of a rather blunt answer followed by "Do your homework". I responded suggesting that the commenter post an actual answer instead of a condescending remark.
The question was put on hold before they could do so, but a few minutes ago I received the following in my inbox:
...and when I checked, the question had been deleted.
While the question may have been low-quality, this is still straight-up rude and abusive, and a flagrant violation of the CoC. But since I don't have 10k rep, I can't even see who posted this comment, let along flag it. I assume it was the user who posted the initial condescending remark, but the timing and wording suggest the question was deleted by whoever posted this comment, and the user in question doesn't have that privilege.
What should be done about this comment? Or since the question has been deleted, should anything be done about it? I personally don't think people should be allowed to break the CoC in comments and get away with it just because the thing they commented on was deleted, but I'd like to get a community consensus on this.