It keeps asking me to allow it to connect to the internet. What for?

Easy install, OTA updates, you can buy a Fairphone preinstalled with it.

So mainly easier access I would say, while not having a downside.

For mobile I also recommend Finamp. It is FOSS and built for Jellyfin, with offline support.

I am using the beta which has more clean UI and is very stable.

I there a way to install multiple languages? I, for example, would like to install both English and German so that I can switch between them depending on the language of the text.