Microsoft may have said it's "optimized" for touchscreen but they won't have intended for that to mean "it's not optimized for PCs and laptops" - As much as MS want to play catchup with apple and android there is absolutely no way they would put their PC and laptop market at measureable risk by putting it on the back burner. If they lose that market they are totally [censored].
Steven Sinofsky has stated it works just as well with a mouse or keyboard driven user, he is probably the person most in charge of the project, so any other statements from MS probably aren't as authoritative as his.
When I first jumped to Windows 7 from XP I also had some of the same problems by accidentally hovering over taskbar items making aero peek get in the way, I adapted quite quickly, people will do the same with Windows 8.
Agree with you about the BBC website but the BBC don't know what they are doing when it comes to technology, Microsoft on the other hand know exactly what they are doing.
Zen 8000 Pro