Today, in a now-deleted meta thread, I got the following comment (literal quote):
as a reply to a comment of mine. (Seconds later, the thread was deleted.)
I flagged this comment as "not constructive". My flag was declined.
I would appreciate an explanation as to what exactly the "constructive" content of this comment is. Perhaps it was edited within the grace period to something else? (I can't view the comment any more, so I can't check it myself.)