These things are quite useful for accessibility, which the HNers talk about a lot as important. Wondering why their favorite news forum doesn't have any?<p>I once lived next door to a gardener / landscape architect who had an awfully messy garden. He said that's the way it always is.
HN follows the "First Rule of ARIA Use"[1] making ARIA attributes unnecessary.<p>[1] <a href="https://www.w3.org/TR/using-aria/#firstrule" rel="nofollow">https://www.w3.org/TR/using-aria/#firstrule</a>