That's not inconsistent with being "fully behind HTML5". That page is meant to show off how Safari handles various HTML5 features. If you view it in a different browser, it is not showing you how Safari handles those features. Hence, it makes perfect sense for it to try to limit itself to people using Safari.
That page is meant to show off how Safari handles various HTML5 features.
Isn't the point of HTML that all browsers handle it similarly? If that link is restricted to one browser, it isn't better than all the "Designed for IE6" sites you used to see in the early '00s, and absolutely no evidence of Apple being "fully behind HTML5".
HTML5 is not a standard. It does not yet behave the same in all browsers that implement it. Different browsers implement different subsets of it.
The site you cite is meant specifically to show how Apple is doing with their HTML5 implementation. There is simply no point in viewing it in another browser. Viewing it in, say, Firefox would tell you nothing at all about how well Apple has implemented HTML5 in Safari.
This is completely different from the "Designed for IE6" sites. Those sites were generally presenting information that was useful to people regardless of which browser they were using.
Correct, which is probably why Apple says: "The demos below show how the latest version of Apple’s Safari web browser, new Macs, and new Apple mobile devices all support the capabilities of HTML5, CSS3, and JavaScript".
