Hacker News Reader

To be fair, the article you cite is from 2018, and the OP is from 2012 (if the arXiv dates are right).

The OP article was submitted on Mon, 30 Nov 2020 23:02:47 - the arXiv identifier 2012.xyz means it was published in the 12th month of 2020, not 2012.

Oh God that's embarrassing. I really thought that's how arXiv identifiers worked, and have been under the wrong impression for some time.