I don’t know how to link to a new thread, so I’m going to make one more “technically” off-topic reply.
I probably should have specified consumer operating systems. Barebones “server only” OSs such as OpenBSD don’t count because nobody would actually use them in everyday life. There’s no consumer programs available for it (not even common ones such as Libre Office or Mozilla Firefox), so naturally you’re not going to find many bugs when you’re running next to no software on it.
Show me a consumer OS that would be used by an “everyday Joe” that is more stable and bug free than Windows, Android, or MacOS/iOS; and then we can all have a good laugh. Until then, open source is a failed experiment.