Because they went about it the wrong way. They made their own distro, their own office suite etc. I believe they would have been successful, if they just used already existing stuff, instead of reinventing the wheel and taking on all the development obligations.
What Schleswig-Holstein is doing, is using en established distro, with established office suite and established cloud solution. They only maintain the servers and maybe patch-fix issues, which they could then upstream.
While that is true, what you where trying to do was change the system with the way you installed Battle.net. Bazzite i sreally all about Steam and you then add flatpaks on top, since that's all handled in your home folder.
But I'm glad you found out the solution with the home folder yourself. :)
Yes, you can expose jellyfin via a reverse proxy or through a vpn like tailscale to your friends.
Quality and speed depends on what client they use, what transcoding hardware is in the server and your internet speed.
For most usecases, a newer Intel based CPU can do 5-8 streams at once without issue, so it will likely depend on your internet connection.
I have an Intel N100 based mini PC on a 1Gbit/s upload connection running Jellyfin that I share with some friends. Usually 2-3 streams at once and it handles it well. Most of my media is in H264/MP4 with AAC audio, so they rarely transcode.
You can install a flatpak plugin for the GNOME software center and use that to update everything. It does debs, snaps, firmware and flatpaks for me on my work laptop.
I don't have any sources, just anecdotal evidence. I work in an IT department for a large company and we see components give up because the machine runs stressful tasks for long periods of time.
I would not recommend you heat your room/house this way, as it takes a huge toll on the PC hardware. It's not really designed for creating heat, like the radioators are, so the components might "burn out" if stressed for long periods of time.
Looks like it. I added a movie to a collection and it pulled in data from TMDB.
Well, you can use/link a mastodon account if you already have one. Not sure if it supports lemmy accounts.