i don't think the explanation as to why this works is correct. the poster says it's because Google and Microsoft "have been working closely with Netflix to get the needed DRM code required for HTML5 streaming", yet:
1. the user-agent switch involves adding a Safari identifier (rather than IE or a new Chrome one)
2. at WWDC 2014, Apple announced that it had been working closely with Netflix along those lines, and that the upcoming version of Safari would be able to play Netflix without Silverlight. (And indeed Safari on Yosemite can do just that in the developer previews)
1. the user-agent switch involves adding a Safari identifier (rather than IE or a new Chrome one)
2. at WWDC 2014, Apple announced that it had been working closely with Netflix along those lines, and that the upcoming version of Safari would be able to play Netflix without Silverlight. (And indeed Safari on Yosemite can do just that in the developer previews)