I'm cautiously optimistic about Lemmy. Anyone can spin up an instance, so it's decentralized, but instances are connected, so there's community.
It may still be rough around the edges, but to me it feels like the spirit of the old phpBB forums combined with almost 20 years of lessons learned from Reddit.
The problem with Lemmy is that one gets sent to some place like https://github.com/maltfield/awesome-lemmy-instances, is immediately confronted with a ton of weird links like "butts.international" and "badblocks.rocks", what even is this? And about 100000 other servers just named "lemmy", "notlemmy", and "lemmy1". So you click a few at random optimistically, then get hit with login page, or a server error, or an apparently empty test-server. You begin to think you're being pranked, like am I supposed to brute-force click like 50 things to find something that's not a joke? Maybe you go to https://join-lemmy.org/ and it says "After you create an account, you can find communities", so great, it's inaccessible anonymously, the same as twitter. You go to https://lemmymap.feddit.de/ and after 15m of page-loading get a hilariously useless cyberpunk-looking word-soup where you can't click any links, much less search for topics/communities (btw there are 2068431 running instances and somehow butts.international is still front and center in my cyberpunk view)
Finally, by ignoring recommended tooling and just using google-search I found a community relevant to my interests, but it has pretty bad content and a whopping 1 user/day. Another google search trying to find a certain topic, I find one, but it has only 3 total comments, and I could not tell what month/year the posts were added.
So, clearly I don't really know what I'm doing here, but this stuff is ridiculous. As long as we're crawling 2068431 instances why don't we look at the communities it hosts and the volume/recency of traffic? At least filter totally empty stuff and/or make it easier to get all the test instances in a sandbox! Discoverability is so bad that I can barely get to the point where I'm considering usability / content.