It does not actually say "full browser support" does it? All I see is "browser support" with an asterisk to indicate her determination is based on most recent builds.

I don't think this is in any way meant as an authoritative reference for browser compatibility.

I think its purpose is that suggested by the title: a practical introduction. A subscript might have been: How to use CSS3 instead of various klduges to achieve interface effects.

In my opinion, anyone using the newer markup and style tools should be testing cross-browser anyway.

Anyway, I think its a great presentation.