I haven’t had a Windows install completely brick itself, but I have seen Windows go into a try to update->update fails->rollback->updates are available->tries to update again… etc. infinite loop.
It’s been a while since I’ve had a Linux system brick that wasn’t me doing something stupid, though I’ve gotten a lot better at handling the occasional minor hiccup.
I’m also in the club of having a couple of Manjaro installs that now date back a few years to when it was still cool.
Honestly as a distro it works pretty well and my complaints are few. If I had to reinstall I’d take a closer look at CachyOS, EndeavourOS, or even just Arch, but I can’t really be bothered to replace something that’s working just fine so I’ll stick with it for now.