Yup, I use Linux to run a Jellyfin server, as well as a few others things. The only problem is that the CPU I’m using (Ryzen 1st gen) will crash every couple weeks or so (known hardware fault, I never bothered to RMA), but that’s honestly not that bad since I can just walk over and restart it. Before that, it ran happily on an old Phenom II from 2009 for something like 10 years (old PC), and I mostly replaced it because the Ryzen uses a bit less electricity (enough that I used to turn the old PC off at night; this one runs 24/7 as is way more convenient).
So aside from this hardware issue, Linux has been extremely solid. I have a VPS that tunnels traffic into my Jellyfin and other services from outside, and it pretty much never goes down (I guess the host reboots it once a year or something for hardware maintenance). I run updates when I want to (when I remember, which is about monthly), and it only goes down for like 30 sec to reboot after updates are applied.
So yeah, Linux FTW, once it’s set up, it just runs.