Call me boring, but for almost 20 years, my music library has been simply a NFS share on a generic PC host running Debian. I've never seen a need to complicate it further with iTunes-this and Jelly-that and Plex and radarr and sonarr and all the blah, blah, blah modern new software that keeps coming out to solve problems I don't seem to ever have.
I don't think so! It's been set-and-forget for years. If I find any new music I want to save, just copy it over. If I need the library somewhere outside my home, I can either VPN in or just rsync it to a USB drive. It requires next to no maintenance. Just occasional backups.
Anything I was into in 2005 is so played out that I would never listen to it now.
I am really the opposite of all this in that I routinely delete my entire music collection to intentionally start over.
It forces me to find what is new and interesting.
I lost a ton of indie electronic music from the early days of myspace music in a 2009 hard drive fuckup. I can't imagine doing that willingly, because I still wish I could find some of those hobby musicians again. I do occasionally trim a few gigabytes of music I don't care for anymore, but I regularly listen to most of my collection that sits around 280gb of mainly flac files.
I'm the same. For my use case there is little benefit in using those tools, and for security and privacy reasons I don't want to unleash all this software on my computers and network.
Jellyfin and a domain name with a dynamic DNS update will do that for you, no problem.
In the house: NFS read-only for desktops and laptops; Owntone to send music to Wiim Mini or stereo receivers (Yamaha, Denon, Marantz, Onkyo -- all of them are compatible).