Comment by ahpeeyem

but there is punctuation: there's one comma and two apostrophes! everything we need to comprehend, nothing more

correctly using those tells me it was a stylistic choice not to use capital letters and omit the periods.

fwiw the HN guidelines say more about not posting "shallow dismissals", not complaining about "tangential annoyances" and being "kind, not snarky" than about grammar and punctuation: https://news.ycombinator.com/newsguidelines.html