Can confirm, Matt is awesome supporting Linux. The guides are excellent and my FW 13 with AMD 7840 was up and running the way I like it with Ubuntu 22.04 and Unity very quickly. If you’re going to try Linux, Framework’s an excellent choice of machine to do it on. You won’t find this kind of support in many other places.

If you do, start with a distro that’s easy to use and well-supported like Ubuntu 22.04 or similar. Some people make the mistake of acting like they’ve got to prove they’re already the PC expert like Linus thinking he has to go straight for Arch-based or Pop OS in the Linux challenge. Start and learn with a well-supported, stable debian distro with stable kernel builds on slightly older (last year’s or older) hardware or something that has official vendor support (I’ve personally found Framework’s support for 22.04 on the AMD FW13 is excellent, even though there are still small issues with the bleeding edge 7840.)
U22.04 defaults to the crappy Gnome3 interface, but you can easily fix that by installing Unity, XFCE (gnome2) mate (also gnome-2 like) or other desktop after install. (It’s safest to do vanilla Ubuntu as the starting point.) “sudo apt install ubuntu-unity” at the terminal and you’ll have a good start.
With Ubuntu, you can do a web search prepending “ubuntu 22.04” to pretty much any question and find good advice and instructions on how to do what you want. Steam + proton will play almost any game whose devs aren’t spending a lot of effort just to prevent them working on Linux. Look up how to install Glorious Eggroll Proton builds if any games give you trouble.
Linux is the best if you want to control what happens on your machine. It has plenty of guardrails and safety nets, but they’re the sort that are designed by advanced users for their own convenience, not by corporate middle managers who want to constrain behaviors they consider undesirable. With Linux, you are much more in control. It can be a double-edged sword, but if you approach it as someone who’s willing to learn, just play around with it for a while, and get used to it, you’ll eventually find that you can do far more on Linux than on any other OS.

Batch 2 here: mine arrived almost exactly a week after that email.

FWIW, I found that changing the BIOS setting for “iGPU Configuration UMA mode” to “UMA_GAME_OPTIMIZED” away from the auto default improved stability and got rid of the occasional screen blanking and freezing I was seeing on my 7840. Your problem sounds more severe than what I was seeing, but it may be worth a quick try before sending it back if you can get the thing to start up again.