I honestly just wish the internet would go back to individual forums. Lemmy is great for a reddit alternative, but I think old school forums were just better overall
I know forums still exist, obviously, but they're kind of shitty right now.
I believe that most of the things people do, or try to do, on reddit (and therefore reddit alternatives) just aren't appropriate for how the site is structured. Reddit is a 'link aggregator', that's what it was designed for. People post links to content.
So it's no surprise that forums are a better option, structurally, for a ton of communities.
NodeBB and other forum software have added activityPub integration on their
dev roadmaps, so you might see it become a thing again. Personally I don't want to create a new forum account for every thing I'm interested in.