Easiest way would be to use borg create --read-special --chunker-params fixed,4194304 '/home/user/sdcardbackup::{now}' /dev/sdX (which I copied from the examples in the documentation). I'm not sure if Vorta has a way to activate --read-special but I suspect not; you can most likely still use it to make the repo and manage archives inside of it though.
Backing up from a command/stdin might also be relevant as an alternative, since that lets you back up more or less anything.
Browsing through the PDF, I'm getting the vibe that their way of measuring "skill" is weird. They claim to use multiple methods of measuring, they list a few obvious ones that they've found to be bad, but they don't say which ones they are using because "we are constantly iterating on our performance metrics to optimize the player experience per game-mode".
Elo-like systems tend to adjust skill based on the chance of winning current match X win/loss, but they're not (just) doing that. I wonder if they have a few weird metrics that look good on paper/in the lab but don't feel good in play.
Elixir, or Gleam/pure Erlang/some other Erlang VM language. I think Erlang is extremely cool and I've enjoyed the little time I spent with Elixir. I also have absolutely no use case to make proper use of it.
Requiring agreement to some unspecified ever-changing terms of service in order to use the product you just bought, especially when use of such products is required in the modern world. Google and Apple in particular are more or less able to trivially deny any non-technical person access to smartphones and many things associated with them like access to mobile banking. Microsoft is heading that way with Windows requiring MS accounts, too, though they're not completely there yet.
Eh. I've been on the receiving end of one of those inboxes and the spam is absolutely, utterly unbearable. Coming up with a better system than a publicly listed email address is on Google at this point, because there is no reasonable way to provide support when you need a spam filter tuned up to such a level that all legitimate mail also ends up in spam.
Personally, I do believe that rootless Docker/Podman have a strong enough security boundary for personal/individual self-hosting where you have decent trust in the software you're running. Linux privilege escalation and container escape exploits fetch decent amounts of money on the exploit market, and nobody's gonna waste them on some people running software ending in *arr when Zerodium will pay five figures for a local privilege escalation or container escape. If you're running a business or you might be targeted for whatever reason (journalist or whatever) then that doesn't apply.
If you want more security, there are container runtimes that do cooler security stuff under the hood, like Firecracker/Kata Containers implementing a managed VM, or Google's gVisor which very strongly intercepts kernel syscalls and essentially reimplements Linux in userspace. Those are used by AWS and Google Cloud respectively. You can integrate those into Docker, though not all networking/etc options are supported.
That's because they had a lot of people "buying the dip". CS is in a very similar position to SolarWinds during their 2020 security slipup. The extent of managerial issues there should've been unforgivable but unfortunately they got away with it and are doing just fine nowadays.
My suggestion is to use system management tools like Foreman. It has a "content views" mechanism that can do more or less what you want. There's a bunch of other tools like that along the lines of Uyuni. Of course, those tools have a lot of features, so it might be overkill for your case, but a lot of those features will probably end up useful anyway if you have that many hosts.
With the way Debian/Ubuntu APT repos are set up, if you take a copy of /dists/$DISTRO_VERSION as downloaded from a mirror at any given moment and serve it to a particular server, that's going to end up with apt update && apt upgrade installing those identical versions, provided that the actual package files in /pool are still available. You can set up caching proxies for that.
I remember my DIY hodgepodge a decade ago ultimately just being a daily cronjob that pulls in the current distro (let's say bookworm) and their associated -updates and -security repos from an upstream rsync-capable mirror, then after checking a killswitch and making sure things aren't currently on fire, it does rsync -rva tier2 tier3; rsync -rva tier1 tier2; rsync -rva upstream/bookworm tier1. Machines are configured to pull and update from tier1 (first 20%)/tier2 (second 20%)/tier3 (rest) appropriately on a regular basis. The files in /pool were served by apt-cacher-ng, but I don't know if that's still the cool option nowadays (you will need some kind of local caching for those as old files may disappear without notice).
Realistically, immutability wouldn't have made a difference. Definition updates like this are generally not considered part of the provisioned OS (since they change somewhere around hourly) and would go into /var or the like, which is mutable persistent state on nearly every otherwise immutable OS. Snapshots like Timeshift are more likely to help.
For that card, you probably have to set the radeon.si_support=0 amdgpu.si_support=1 kernel options to allow amdgpu to work. I don't have a TrueNAS system laying around so I don't know what the idiomatic way to change them is.
Using amdgpu on that card has been considered experimental ever since it was added like 6 years ago, and nobody has invested any real efforts to stabilize it. It's entirely possible that amdgpu on that card is simply never gonna work. But yeah I think the radeon driver isn't really fully functional anymore either, so I guess it's worth a shot...
Needed to write a syntax highlighter for VB.Net but I couldn't find any weirdly written edge cases online, so I had to make some myself.
Probably an anti-piracy thing. It's pretty common in the console hacking scene for only specific versions to be vulnerable, or only have exploits released for a specific set of versions. People can get around it by looking for games released with specific updates on the disc/cart but it's a pain.