An actual solution for that issue would be to require people to tag their content, and allow posters to pick what they want to see based on those tags. But for that you’d need further improvement of the software.

I would argue the actual solution is to curate your feed by subscribing to communities you enjoy and “unsubscribing” from the ones. You can even create your home (or whatever the subscribed feed is called) feed for your “finer” taste and then block communities you don’t want to see in the “All” feed.

That’s how I’ve set up my Lemmy. I have my home feed for niche communities that generally don’t end up in the all feed, and for general news I have the All feed where I’ve selectively blocked out communities I really don’t care about. Ideally I would like to set up multiple feed because there are some communities that are so small they don’t end up in my home feed either. I would need a separate feed for the extra niche communities so I could participate in them and help them grow larger.

While a tag system could achieve something similar I feel like tags would probably be more annoying to use because you’ll be at the mercy of whomever sets the tag. If you look at how people use tags on Steam the tags can easily overreach. I had blocked sexual content tag on Steam to get rid of sex games, and it blocked Baldur’s Gate 3. Technically Baldur’s gate 3 contains sexual content but there’s a world of difference between an RPG with sexual content and an actual porn game. I think Valve added some other way to filter out adult games so now I use that and I don’t even bother with tags.