Stability is something that I heard complaints about from multiple people. Apparently the graphical package installer thing conflicts with pacman, or something? Absolutely retarded. Why not just make a GUI front-end for pacman? It's not even hard. It's not even harder, it's EASIER! Anyway, I used Arch for years and it never broke, it's very stable. Probably the most stable distribution that I have ever used along with Devuan. Least stable would be Ubuntu and everything based on it. Never actually used Manjaro, though.

The whole stability meme is basically the inverse of reality. Arch is more stable than Ubuntu, and so are even Gentoo and Funtoo (not sure if you used source-based distributions). All of these distributions "for beginners" are unstable. You can go to DistroWatch and read people's reviews of the dumb shit that happened to them. Not the case with a distribution like Devuan. And I don't remember Arch's reviews, but generally, with a popular "install your own shit" distribution like that, nothing goes wrong unless you do something stupid, because there is so little that can go wrong.

A program can break, that happens, but the system keeps working, and you generally have a good idea of what is wrong because you have installed it and set it up yourself. You don't really get the entire thing falling apart for no reason like you get on desktop environments and "beginner" distributions. People meme that distributions like that break all the time... I don't know where the fuck that comes from.

I look back at when I used Windows, and it's weird to even think about. Constant errors and crashes, and the system slowing down over time for no reason. That just doesn't happen anymore (other than the system freezing from running out of memory, which is not something that any OS handles well anyway). My systems have been stable since they have been installed, and that is probably because I only used distributions like Devuan and Arch as my daily drivers. I only really used distributions like Ubuntu to learn, on secondary computers, so they broke, but it didn't matter.