ha! I get the criticism of an unintuitive, over complicated interface with a steep learning curve. So, if a n00b could figure out your OS quickly, you can show that your OS is intuitive and user-friendly. BUT, you cant make the leap to say that if you cant figure everything out instantly, then you have a bad, not user-friendly OS. With Windows 8, its literally 3 or 4 things you need to know and you're off an running.
I wonder if the same is the case for someone coming to OSX. One weakness in that video I noticed is that the lady uses XP for her work. So, she knows how to move around the desktop of a Windows machine (at least I assume she does). I would have thought that given this background, jarring as the Win 8 interface may have been, some things would have been obvious (which is what is usually passed off as being intuitive) such as right-clicking (or at least trying to click both buttons of the mouse) at the bottom left edge of the screen. There are other minor things that I noticed - both in the video and when I look around. For example, everyone (who uses a computer) regardless of the OS - at some point - looks for the date and time. While I did not notice this as being significant, my partner pointed this out. You see, sometimes when I am working in my study, she comes over to have a chat. Often she asks me for the time. I caught myself (this is when I was on Win 7) looking to the taskbar to look for the time. Now, while I have a two-monitor setup and one of them is always on the traditional desktop, I do the same thing and all is fine. But sometimes I am working only on the RT and usually either a full screen app is open or it is the MUI. In either case, to tell her the time, I would have to sweep in the Charms bar. Now, imagine a work station with only one monitor. If you are the desktop mode, then there is no problem. There is nothing to do - the date and time are not hidden away. But what if you are in the MUI? I did not think it significant till my partner pointed this out. Since then, of course, I have downloaded a time app (recommended by Russ!) and it does not matter any more. But, I think, it is little things like these that irritate people (like the lady in the video - though I do think she does have other problems) and given that we seem to be living in an Age of (widespread) Attention Deficit Disorder, I am not surprised to find that people are not taking their time to look for things or to think things through. Btw, I also noticed that in the video, her intro to Win 8 was, well, badly timed. She appeared to be cranky and bothered (perhaps sleepy too!) - something that is not replicated in the other videos where she is seen trying other OSs.