They definitely are in need of developers, there's an open ticket for memory leak issues and I just checked last week with the latest Master branch and it still exists at least on my system. Even if you just start the server and then never interact with it in any way whatsoever never load the interface play anything the memory just slowly grows and grows and grows until the system runs out of memory.

It also still has a lot of pretty basic media matching errors where it will pick the wrong show for files for some reason or just fail to find the show at all. I've seen lots of cases where the only way to match an anime is to use the Japanese name in the search even though that brings up the English name metadata and other Oddities like that. All of my stuff is organized and named by sonar using a very clean format that should be very friendly to finding metadata

i actually know a number of developers that are interested in jelly fin as a concept but when I ask if they are going to contribute they just go "eww no it's c# and .net i ain't touching that". Perhaps the developers should consider a rust rewrite lol, get the rust hype devs.