If I was the boss of a business, and on a given Sunday I had 14,000 customers, and two weeks later I had 7000 customers, I would be asking who screwed up, where can I find a more qualified replacement, and what can I do to get those customers back. I wouldn't be saying, boy I'm sure glad we shed those 7000 weaklings.
Keep in mind this is just a few weeks after a major patch. It's like you launched a huge marketing campaign, or released a movie, or put out the next year's model car and you lost customers.
I'm not even close to saying ED is dying, I'm saying the last two weeks represent some poor choices/poor product based on the active user evidence.