Bluetooth is not secure. OP is not looking for security, just bluetooth audio.
Strit
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.
I wouldn't be surprised if the matter protokol somehow needs some google or apple service to function.
If you already have a Nextcloud instance you could try Cospend. It's a nextcloud app, but looks really simple to set up.
Most of the relevant issues they link to has been closed and/or dealt with.
Firefox disables some 3d acceleration stuff on Linux, where it's enabled by default on Windows.
So look through your ~~about:config~~ about:support for any acceleration stuff that's disabled. You might be able to enable them.
Bazzite is a SteamOS-like distribution. SteamOS is immutable, meaning most of the OS is read-only and have fixed updates.
So what you are doing is not really what Bazzite is made for.
I think it would have been an easier journey if you got Fedora or even Ubuntu, as those are normal filesystem distributions.
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.
Matter sounds neat and all, but it's still wireless on the 2.4 GHz band, so it will still have the same amount of noise that Zigbee does.
AUR package maintainers are not the same as Arch repo package maintainers. Anyone can be an AUR package maintainer.
Isn't that roughly what OpenWebUI does?