If you just want something stable and boring, Linux is just not it. Every distro has its own goals and target users, so a lot of the effort gets spread across the ecosystem.
With macOS or Windows, for better or worse, everyone is working on the same platform. So more people are working on the same problems. With Linux, everyone is kind of doing their own thing.
It is basically the same Android versus iPhone argument. More choice and freedom on one side, more consistency on the other.