Amazing info, thank you for the response!

What are my realistic security concerns with a jellyfin server that I let friends and family watch while trying to minimize the troubleshooting and steps they need to take to get started?

They also learn how their users interact with it.

This is the first I’ve ever heard of it being an acronym, and it seems unlikely to me. The origin was around tournaments where there was a degree of changing one’s own choices based on the likely match-ups you would face. E.g. for something like magic, if everyone is on a slower control deck, you can take advantage of metagame knowledge and run a aggro deck even if the cards are not quite as powerful in that card pool.