Two sets of my grandparents use Mint ever since, after two decades, I just couldn’t be bothered to give Windows tech support anymore. It wasn’t much of a “conversion” since they weren’t really aware of it (and after about a year, when it came up in conversation, remarked something to the tune of “That’s Linux then? That’s nice.”). And you know what, that’s what a good operating system should be - invisible to the user. The general user doesn’t care, they want to do stuff unrelated to the OS, they just happen to need an OS in order to do it.
You rock! The Jellyfin Android TV app on a LineageOS-Pi4 is my current preferred way of bringing Jellyfin to my TV. I tried messing around with Kodi-based solutions for a while but if you don’t like the default behaviors there then it’s an absolute nightmare timesink to reconfigure. AndroidTV Jellyfin client - install, open, everything is in its place already.