I realise building and maintaining such a recommendation engine is not cheap, but a funding model can surely be found with such a big audience e.g. ads between comments.
Yeah... no.
However, I do like having mainstream stories separate from the deeper obscure hacker stories.
I use my own view that groups together a some keywords leaving the other interesting stuff up top. Written in Vue. It also uses stable ordering of only one day's stories instead of the slot machine doses of 'here's something I haven't seen yet'.
[0] https://hackerer.news/ [1] https://gitlab.com/karmakaze/hackerer-news
e.g. I'm looking at the lobste.rs tags and HN would probably need a much bigger superset, or a smaller set of higher level topics
Of course, there are tags like `meta` for discussing tags. There's also a recommendation system that allows users to suggest that a story be retagged. Posting a video or PDF causes the `video` or `pdf` tags to be automatically applied. It's a rich system, not just a many-to-many listing of labels.