The test of dupiness is 'significant attention' and that one was borderline, or rather slightly below the usual line we'd draw, so I think it's ok if there's a repost. More at https://news.ycombinator.com/item?id=37484775.

(A small number of reposts is ok if an article hasn't had significant attention yet. This is in the FAQ: https://news.ycombinator.com/newsfaq.html#reposts.)