Actually, some of this makes sense. Remember that the way we (your average geek) use computers compared to the average human being is much different. My wife checks email, goes to facebook, uses Word and that is about it. Why does she need all the cruft of a "normal" OS. Of course she could, and does actually know how to do more advanced things with a computer, but that is just not something she NEEDS.
In that case a much simpler desktop experience (Metro) isn't really backwards, but it is really following what Steve Jobs said about the way we'll use computers. For the average user a tablet like experience will really do the trick just fine. You appear to forget that the way we use a PC desktop is no longer the norm.