So, I love this site. I've been here more-or-less since the beginning, across various accounts. I also have accounts on other Lemmy instances.
One common pattern I see is that instances branch out their communities too soon, and overly dilute the conversation. It makes an instance that is ultimately not that active (compared to any of the big sites that don't need naming, really) appear to be even less lively, due to so many instances with either nothing at all, a few month old posts, or a generic post linking to a projects blog.
Note that I am not criticizing the instance by pointing out the low activity levels - I really do love this place. It's just a fact at the moment. You can switch viewing posts by new and scroll down a little to see we get around 5 - 6 posts per hour, occasionally a bit more and occasionally a bit less.
I think that having lots of inactive, dead looking communities is off-putting. I know that I certainly don't feel encouraged to post in them. I worry this might have a similar effect on other users too.
I do understand that c/programming is deemed as something of a catch-all community, and so anyone could post there rather than the niche communities, but I'm not sure that this is totally obvious to everyone.
Personally, I feel we should purge all the tiny communities that have no posts (or just a single blog post, for example) and encourage people to post in c/programming. Then, new communities can be made when a particular topic becomes large enough to warrant divergence, either because it's clearly a subject of interest to many users or because it ends up dominating c/programming. c/rust is an example of such a community, as is c/programmerhumor.
I am nobody here, and I was not asked for my opinion, but I just wonder if this topic has been thought about much? I really want this place to thrive. Do any other users here have an opinion? What do the instance admins think?
I don't disagree, I do think there are too many communities for the number of active users (both here, and Lemmy in general). What I'd be interested to know is this: Is there some research into the subject, or even a write-up from someone who has successfully grown a thriving community in the past?
I'd argue that with !programming@programming.dev being the "default" community, this is somewhat mitigated. It's not policed, so you can post there about Rust, Godot, Python, or whatever you like and nobody will moderate you or ask you to move along. Maybe the "over-dilution", as you call it, hurts the instance as a whole. But if you think of Lemmy as something wider than a single instance, it matters less. !programming@programming.dev is the flagship instance here, and it's a large one by Lemmy standards. People will subscribe to that from all over the Fediverse.
So I think it comes down to your view of programming.dev as an instance vs Lemmy as a network of federated communities. Ultimately, people will just subscribe to whatever instances interest them - and hopefully Lemmy as a whole will thrive, including this instance.