Ah, it turns out this is a dupe of https://news.ycombinator.com/item?id=45903670. (I thought the submission process used to catch such dupes? The title and URL match exactly.)

6 upvotes and no comments isn't enough attention to trigger dupe direction.

Oh, I didn't realize there was a threshold. What is the threshold?

I don't know the exact threshold the software uses, but my impression is that the mods use something in the ballpark of <20 points and <5 comments?