As lousy an interface as the Start Button and the Start Menu are, it's silly to believe there's any truth to what you say about "a lot of people not knowing what it's there for". You have to use the Start Menu to use Windows, and it's been part of Windows since 1995. From reading posts here, it's the only thing people actually understand; hardly anyone gets the Windows 7 taskbar. (NB: As I've posted many times, I thought the Start Menu was garbage since I first saw it in the NT4 beta, because it's hard to navigate, and IT GOES AWAY when you select something from it, forcing you to do the navigation all over again the next time. For me, its primary use has been as a repository for program icons that I copy to more useful places, like pinning them to the Windows 7 taskbar, which has completely replaced the program launchers I used in earlier versions of Windows. Now that thing with pinning, progress indicators, jump lists, etc was a slam-dunk of goodness.)playing a DVD could be even less, from Microsoft, I don't believe they would have any reason to make that up. The Start button I have no idea of the usage, but again from Microsoft, a lot of people don't even know what it's there for.
So, despite computers getting more and more powerful, it's time for Microsoft to sacrifice the capabilities of its flagship OS on the altar of trying to achieve a foolish consistency with severely constrained devices that require an incompatible, markedly different interface (touch) in a market they blew? I think Windows 8 should be known as Windows HE, for "Hobgoblin Edition". Oh, and since you seem to be into laughing at people, this is at you:The main thing is that MS is trying to get this OS right across the board from Desktop to Tablets and Phones, some of these systems will have much less power, hence the need to drop any extra baggage.
Hopefully they are doing this right, if they are, one day we'll look back at this and laugh, like we do at the people on XP. If they're doing it wrong, we might all end up making Apple even more money.