I mean, it’s pretty cool. There’s that fact. But my guess it’s probably being drive to top due to the parallels to 2001. I’d imagine there’s a large Kubrick fanbase on HN, if not just a 2001 fanbase.
The book and the film where written and developed cooperatively so both really ¯\_(ツ)_/¯ However, they are both based on clark's 1951 short story The Sentinel[0].
https://en.m.wikipedia.org/wiki/Arthur_C._Clarke