If the community were going to fork it, they would have forked it by now.

Why bother? Mbin, PieFed, nodebb, flarum, the list of alternatives goes on and on. Lemmy is fairly mature, that's true, but also the devs kept adding new features, so there wasn't a need to fork it. Plus, each individual instance already somewhat "forks" it each time they do an update - what I mean here is that some like Hexbear.net and Lemmy.world have extremely heavy modifications that they have made, affecting only their own instance (to clarify, the latter is more code checking iirc while the former was actual modifications).

If anyone needs to they could fork Lemmy at any time. But who wants to learn Rust, a language that is super difficult yet unfinished, compared to e.g. Python that PieFed uses, or Mbin is PHP (and Sublinks iirc is Java, etc.)?

Best to break away free from Lemmy entirely. Have you noticed how Lemmy is even more authoritian than Reddit? Yes modlog, but no modmail, no notification of a moderation event, no ability to contact a mod to ask why or discuss, no "right" to even know which mod it was - you simply submit your content, and if a mod decides that they don't like it, then it disappears, without leaving a trace (in contrast, Reddit leaves removed posts still accessible to anyone with the URL), or without warning. The closest thing I've ever heard of that is like this is when Reddit "shadow-banned" someone. While on Lemmy, every single post removal is that way. The admins have total control using Lemmy, and mods have a lot, but regular users? Naw, that's a different story... you all get much fewer freedoms than even Reddit offered (usually, unless they actually did shadowban you).

I much prefer PieFed tbh:-). It has a ton of ideas pushing for democratization of moderation features, putting control of such matters into the hands of the individual users rather than forcing mods to have to do all the work of moderation. e.g. if someone doesn't ero see posts containing certain keywords like "Musk" or "Trump", a user can elect to filter those out (the available options there are: All, None, and get this: Some, which is very nice!:-), rather than making a moderator have to decide for the entire community as a whole (they still can do that, but now they don't have to, bc the software provides another alternative for those users who want to, leaving the users who don't want that filtering to see that content, while still sharing the same space, rather than having to make a new community:-).