I guess, and I would not use it on a production server, but on desktop both Ubuntu and Windows can be unstable as well despite spending months instead of weeks or days testing their updates. Arch keeps it simple, there is not much to test, basically just the core, if the kernel, systemd, X, pipewire and gcc or llvm works I can do my job or take care of the rest. Even if they don't I can take care of it. There is not much to it. One can always revert too, the packages are all git based as well. A working system is always a few commands away.