Sounds good. Streaming video is one area where I can understand and accept reasonable DRM, as Netflix seems to use. Fights like VP9 vs H.264/265 are worth fighting to keep content creators free of bullshit, but media extensions not so much. Nice to see Firefox taking the practical route here. I'll soon be able to use my default browser on Linux for Netflix rather than having to switch to Chrome.
Also kudos to Netflix for ditching Silverlight and going with something that can work more universally. Not having to have a Wine-based hackaround any more is very pleasant.