There are so many people here claiming this is the wrong choice, and yet I wonder what percentage of the commenters here are using chrome? By most sources I've seen, Chrome has 2x the marketshare, and actively pushed FOR EME. Perhaps if FF had Chrome's current marketshare, they would have been in a position to say no, but its the users who made that impossible. Mozilla should be commended for fighting as far as they…
The tech community brought this upon itself when it switched over to browsers provided by two enormous corporations fully beholden to their shareholders, instead of sticking with a browser developed by goddamn public benefit corporation.
The tech community brought this on itself when it couldn't be bothered to test sites in anything other than Chrome and maybe Safari on their iphone.
The tech community brought this on itself when it started making websites webkit only, without a thought for what vendor prefixing would do to web compatibility.
The tech community brought this on itself when it decided that per-process tabs were more important than preventing the future of the web from being controlled by 3 enormous corporations.
So I say that we stop complaining and start getting used to it. This is what we all wanted, and now we can reap what we have sown, while the gentle glow of the chrome url box lights up our screen.