Indeed! This exact same conversation happened on reddit several years ago. The community became diverse enough that a large group of users didn't like the posts the other groups up votes to the homepage. There were initial suggestiona that tags were the best solution but the reddit gang put together subressits and it's been the greatest change to the site since it started.

Looking forward to subscribing to the best sub-hackernewses.

Each Reddit post only goes on one subreddit, but if HN allows posts to have more than one tag, then it could be active in several sub-HNs, one for each tag.

This is the same difference as between traditional email folders and gmail tags.

almost like every publishing media ever. the general design of HN is to be simplistic, but with the current popularity it doesn't scale.

IMO even [strictly tech] [everything else] would work, although I'd prefer a more advanced option to filter out stuff.

Maybe more like how lobste.rs allows you to filter out topics you aren't interested it.