Even though I ended up with two broken Switch 3s, I still really wanted one. After all that frustration, I bought an Acer Switch 5. It's absolutely amazing!
It comes with the lighted keyboard, but is still compatible even with the keyboard from switch 3. So that is the only part i can recycle, and keep as spare one. Only thing i was missing, was the strap for the pen on the side of keyboard, so i used the one from the broken switch, and glued it there. It seems, that the keyboard used to have it too, but it wore of. Now it is complete.
So back to the device. It has i3 processor and 8GB RAM which should be enough for anything i would do.
So, when it arrived, I tried the pre-installed Windows just to see if everything worked. When it did, I started booting Ubuntu. At first, I tried the live version just to make sure that everything worked as it should. Then I started the installation. To my surprise, it crashed three times, which confused me a bit. I therefore recreated the USB installation media using the latest ISO image and tried again. This time it worked first time and without any problems. Maybe there were just some corrupted files on the old 'setup'.
I was really impressed by the screen. With its 2K resolution, it is absolutely stunning. To be honest, I don't usually care about resolution. I grew up with MS-DOS at 800 x 640, which I thought was more than enough, but this is really impressive. All the details are smooth, which I really like. The pen that I bought for the Switch 3 also works on the Switch 5, which is convenient.
The only issue I'm still struggling with is palm rejection. It works, but it can be a bit unintuitive at times. I would have to adjust the settings slightly and I think it would work well. The pen is, however, very precise, and the pressure detection works really smoothly.
I still need to adjust some settings and install software, but I'm really enjoying the notebook and I think it will stay with me for a long time.

Jan "Jenkings" Škoda - blog
Simplifying IT, Amplifying Knowledge