Although I disagree with a lot of Google's policies (with respect to privacy, etc.), the claims made by the author here don't make much sense. It's pretty clear that the author and many of the people commenting don't understand how web development for multiple platforms works. Using a new web standard technology (http://www.w3.org/TR/media-source/) that isn't implemented by all browsers and providing a polyfill for non-compliant browsers isn't "crippling" the other browsers. It's considered best practice. If websites only used technologies that are available in all browsers, the web would never move forward.