If you want to send files between just your own devices KDE Connect is great and can do many other things too. If you are on Gnome there is a gnome extension for better integration (gsconnect I think?)
Six columns of binary numbers each representing a base 10 digit to display three base 10 numbers is kinda stupid, but it is easier to read than just having three binary numbers I guess.
Even without capitalism I prefer having been able to read the existing books without an ending over not being able to read any of them. I can get some enjoyment from the journey even without a destination
Jellyfin doesn't have a TOS, it's open source license allows using the software in any way you want