I have a folder of MP3s, some of which date back to 1999, just a few years after the format was popularised. Most of them have utterly terrible names (think RIDEONAM.MP3). I think at this point they might even survive the heat death of the universe. And they’ll still be terribly-organised.
I use Jellyfin also.
My workflow is like this: buy CDs from Discogs, rip them to FLAC, adjust filenames, covers and metadata with Picard, push the files to Jellyfin that promptly detects the new files.
I also use Soundconverter in Linux to generate MP3s files for devices that don’t support FLAC.
I’m very happy with this setup and my collection has never been so organized.