This video is from a channel on YouTube called Blogphilofilms. It tries to make a cirical evaluation of the pain points of Windows 8. If you look at it from a usability perspective, there are points that get highlighted that are spot on. But, missing out on the balance view, it ends up sounding like a rant. But, never the less, it does have a point to make about the new Microsoft OS.
Bottomline: An Operating System should facilitate a users enjoy the device and the applications that a user would like to use and perform tasks. When engaging with the operating system itself becomes a task, then it is a problem. As simple as that.