HN is such a weird place. Every so often it adopts these communities of people obsessed with something, and lately it's whatever LK-99 is. I wish they'd just go make a subreddit.
Quite ironically though, individually policing & complaining about the relevance of specific subtopics indeed feels quite "Reddit", while one of the things that make HN so pleasant is exactly that it's user base usually abstains from arguing about such meta & leave moderating actual offtopic to the moderators.
Life is so much more beautiful and wondrous if you're willing to be vulnerable. Let people be excited.