And notable Hacker News eschews all of these affordances and others because they're considered unnecessary complexity. The only way to sort a thread is by karma, the only way to read it is top to bottom, even if it's 10,000 comments. You don't get a signifier of new comments. They even removed pagination, which objectively made reading long threads easier, and something as simple as thread collapsing was wildly controversial when it came out here, after years of pleading.

Hacker News' entire cultural zeitgeist is "being better than Reddit" but honestly in terms of readability Reddit is a better experience.