Bullshit.
1) I am able to gleefully avoid it these days, but in the past flash worked with Linux. Furthermore, all relevant DRM systems work with Apple devices including OSX. Netflix works on Android, and on Google's ChromeOS.
2) Even if it did, who gives a shit? I'd rather have people who absolutely must watch netflix on their laptop do it with windows than have the standard dirtied with this shit.
3) Nothing about this shit being added to the standard will make Netflix work on Linux with open-source browsers anyway.
You are high if you think this will allow you to use Netflix on your GNU/Linux box. Netflix already has their shit working with google-chrome, on a Linux kernel, in ChromeOS (Linux, but not "GNUy", for lack of better terminology). They don't allow that to work with regular GNU/Linux because they don't trust the rest of the stack to keep their precious bits secret.