What bugs me is that Google gave itself a pass by white-listing YouTube - because it turns out some people still need Flash on YouTube. Google should dog-food their own policies.
But, they give themselves a free pass, as their own "webpage guidelines" page is 3.4 megabytes long! But, even worse, it has a video on a carousel that repeatedly downloads the video whenever it restarts the video loop.
which is true whether they give a boost to themselves or not.
That's probably it. Then again, it's not just Google that has to deal with legacy applications. So yeah, if you're going to shove this policy in the name of open standards, dog-food it and deal with the same pain countless of companies will have to.