In fact, IIRC I asked him to stop at one point (which he was totally fine with) and then changed my mind after looking closer, because many of these articles are so good for HN. Of course, when the author of an article also posts it (as was the case with the OP), or when some less prolific submitter posts it, then we want that person's post to "win", but this doesn't always happen.
I wonder if we could write some code to catch this when it does happen, and then maybe we could have the best of both worlds or at least a chunk of it.