Umm, this video didn't show or say anything that wasn't in the videos that caused the "freak out" to happen in the first place. There was no description of how the new html/js/css development platform is going to work, no mention of how it will integrate with .NET, or if it will integrate at all actually. I'm not one of the people who are freaked out, or even care, about this windows 8 crap, but this honestly answers none of the concerns I've seen people have.
tl;dr: you can't answer a question by saying the same exact thing that prompted the question to be asked in the first place -- this is therefore not a "response".