Makes you wonder about the underlying plumbing though, if setting an GUI appearance option can lead to data loss in the first place.
Is there a writeup/summary somewhere that explains "the lessons learned"? Otherwise I'd kind-of start to worry about what could happen, if ... say ... I change the Bluetooth output codec, or some other other UI details.
Not that I'm aware of, but I'm sure you could check the GitLab commits and/or ask on their forum if you're interested.
This is a young project (just under a year old) with developers who do this for fun. The developers are going to keep making changes that maintain the fun they have during development.
Mistakes will be made. Things will break. Lessons will be learned. This isn't a decades-old mature distro, so if you're expecting something absolutely bullet-proof then Garuda currently isn't it.
However, I will say that the pace of improvement is pretty stunning. Their direction and what they have achieved in a short space of time is pretty impressive - not just within the distro itself but the surrounding OOB features and infrastructure like ChaoticAUR (prebuilt AUR packages), secure password management (Bitwarden), dotfile sync (NextCloud), a pastebin service for log output (Privatebin), ...
Is it perfect? No. Is it for everyone? No. It is what it is, and doesn't try to be anything else, and I kind of like that approach.