You didn’t reply to this:
Did you try it?
Also, what makes you think switching to another Arch-based distro will solve this hardware/firmware-based software problem?
- As for the login issue, I assume you are using SDDM. Is this correct?
- If yes, was the login issue always the same even before the Plasma 6 update?
- Were you using KDE Plasma 5 before with no login issues?
- You said non-default WMs. Which ones?
From an outside perspective, it would look like you are giving up without actually trying.
Additionally, if you can’t fix an issue on what is considered regular Arch Linux, you probably won’t be able to fix it on Artix - Arch Linux for advanced users who really know what they want and what they are doing.