Gruber has said that he liked Google’s approach of including many codecs (WebM, Theora, h.264) in the recent Talk Show episode with Dan Benjamin. I’m consequently not sure whether he is supporting Apple’s decision to ship OS X Safari only with h.264, it doesn’t sound like he does. (He is certainly making less noise about it than about Google’s decision.)

This is probably his position on Safari for OS X, not Safari for iOS, since WebM hardware is not out yet (and it is consequently crazy to expect Apple to support WebM on mobile devices – Android phones also don’t).