There is finally a decent alternative to reddit, after one has been needed for years? And it’s open source federated software?? AND I can sign up on an instance that supports free sharing of media?!
I have been waiting a long time for reddit to fuck up badly enough that something else could fill the vacuum they created and do it right. Awesome.
People from reddit started joining only 2 weeks ago, it will take some time for the platform to mature for sure. And regarding niche communities, your best bet is to make them yourself and start posting on them to attract people that are interested in the stuff.
I have actually done that with a community I’d personally be willing to moderate already. Naturally though, filling a community with a subreddit’s worth of content solo is a challenging endeavour.
Even some of the less niche communities, for example, Zelda, aren’t really existant here yet either. I’d create them all myself, but I wouldn’t be willing to moderate them all.
What we have here already is good, but it will take a long time to develop until it attracts the userbase necessary for niche communities to thrive. This is far from a complaint, in case it happens to come across that way, it’s simply a fact.