Sure, but deconstructing the platform to look at the engagement points is also useful. Some things that I think set HN apart in a good way:

The lack of any kind of personalization whatsoever on Hacker News is a huge differentiator. There are no notifications, so if you want to find out if somebody replied to you, you've got to go check. Everybody's front page is exactly the same. There are no direct messages. There are no in-line images or videos or even emoji. The feed is not endless. There is no targeted advertising. There are no reactions to posts other than upvote/downvote.

I guess you can lump HN in with Instagram and TikTok, but it just feels like a very different product, in ways that are relevant to the analysis of whether its existence is a net positive for society.