A theory here. Is it not possible that the "value" that once existed in having keywords in domain has been set to zero or next to zero? The EMD sites that remain would remain even if they were any domain name under the sun even without a keyword in there?
In other words, the ranking value might be gone and it's as simple as that. Of course the impact wouldn't truly be known until they went ahead with adjusting the dial. How would they really truly know the impact beforehand?
In my opinion, Google has adjusted keyword domain value in a similar way that they adjusted the value given to length of existence on the web. Ranking factors no more?