Perhaps the most important thing about Jellyfin is that it's open source. I really wish the project received a little bit more love.
That would mean running a publicly accessible instance would be ill advised if you can about the privacy of what you host. Plex on the other hand somewhat encourages publicly accessible instances, so you can listen/watch while not at home.
(The caveat being, certain plugins disclose media to Plex but arguably that's a first or second party not some rando on the internet scraping stuff)
It might not be in a great place now, but I'm not sure that's necessarily a reflection of the product
Jellyfin may not be perfect but surely it's good enough for most use cases.
One of the things I remember making it real difficult was that the UI of Samsung's dev tools app assumes you have the default light theme in GTK (or whatever widget toolkit they're using), and since I had a different dark theme, I couldn't see any of the icons.
So then I switched to one of my devices that were running Ubuntu 20.04 with Gnome, where the app would not launch due to something about "pixbuf". Side note - I'd had that particular error so many times in Ubuntu with various apps that it's the sole reason I eventually learned Arch (and tiling window managers), and haven't looked back since.
I finally managed to get it to launch and work correctly on Xubuntu running on my girlfriend's very, very old laptop that takes about 8 minutes to boot to full speed. So save yourself the headache, and run the Samsung dev tools app on an unmolested Linux installation, with no special theming, that is not vanilla Ubuntu.
Thanks for the feedback.