Speaking as someone actively building niche focused communities (literature.cafe for books and writing & lemmyloves.art for art) this kind of defeatist attitude saddens me. Community’s don’t explode over night. I fully get that community discovery is hard as hell right now though with lemmy, and attempts are being made to fix it. But with the communities that do exist, it’s a matter of participating and starting conversations if you don’t see one you want to participate in. On a new and emerging platform like this, you really can’t be a lurker. Posting, commenting, engagement, and likes is the only currency here.
The thing with lemmy is that it does feel like screaming into the void sometimes, but you also have the benefit of a smaller community to have more focused discussions. Quality over quantity is the focus here rather than the mess that reddit had. Reddit has tons of content but a large portion of that is just noise and spam, it is much more preferable to have a high quality post once a day with an engaging and thoughtful discussion than a community filled with low quality spam most of the time and only one high quality post a day that’s nearly impossible to find.