Is Google being evil?

So for the last 10 days or so, I've noticed that YouTube videos have been different on the iPad. The zoom to full screen no longer works. And it's not just for Safari - all my iPad browsers have done the same when the browser ID is sending out iPad identifiers.

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Is this an oversight by Google? A mistake? Or have they started sabotaging iPad users' experience on their site in retribution for Apple dropping the Youtube app from iOS 6 and refusing to renew the Google Maps license?