I though that question was disingenuous. Gruber's big support was for Apple dropping Flash and supporting H.264. It's dangerous to argue about being "less" or "more" open, but I'm going out on a limb and saying that going from Flash to HTML5+H.264 is moving in the correct direction.

Moving from HTML5+H.264 to HTML5+WebM, or perhaps to supporting both, wouldn't be inconsistent with the switch from Flash to HTML5+H.264 they made with iOS.