CachyOS is the most stable distro I've ever used. It's been like 20 months or so, and I've had exactly a single issue, which resolved itself in like 3 days (kde bug that got fixed quickly and wasn't a big deal either). I have zero problems with only having outdated software in the repo, which is something I can't say about any other distro I've tried. It's the ONLY one where that's the case (obviously would apply to base arch as well).
I have no idea what kind of problems people keep having that leads them to calling it "unstable". I certainly haven't experienced this at all.
