It's merely supposed to be 'of interest' to hackers. Clearly it was, for some at least. Should we flag articles about space telescopes, or medical devices? Just because they're not strictly about computers?
Typically the space telescopes and medical devices articles are related to startups. Those are okay. Startups and tech, that's the bread and butter of hacker news. Anything else is just weird and I don't see why anyone would post about it or read it. What does it matter what some british kids did in the 1850s or whenever? It doesn't help anyone become a better entrepreneur or hacker.