> The year of the linux desktop folks have been trying this for decades.

Have they? I'm not aware that any of the desktop linux projects particularly care about POSIX or being a certified Unix™.

the claim is that the linux community has been trying for decades to create a desktop with the usability that your grandma can use it. the implied claim is that they failed, which is of course nonsense. linux has caught up with the usability of mac os a decade ago, if not before that.