That was funny, but the point of this announcement is that the language is (supposedly) out of Google's hands.
https://en.wikipedia.org/wiki/ECMAScript#ECMAScript.2C_4th_E...
I think Microsoft was key in killing this. With respect to Dart, Google will have the ability to control Dart's future as long as it wants to and if it somehow lost control of the ability to shape the spec it will just do its own thing anyway, just like they have with Blink and standards (directoryReader comes to mind).
I was part of the team that started Dart (right place at the right time :), and helped design the language. Obviously we have some emotional binding to the language and would like to drive it into the right direction, but most of us are perfectly happy with others taking the relay.
We still have some ideas and proposals that we have worked on and that we want to champion, but all in all I just hope that the TC52 members will do a good job.
Adobe was a big proponent of many of the big features in ES4, but so were Mozilla and others on the committee. Adobe was hoping that the work in AS2 (and eventually AS3) would anticipate what was coming and that JavaScript developers would be able to easily move back and forth between the web and Flash/Flex/whatever else they had planned at the time.
Of course influence went the other way as well: Adobe's experience with the needs of ActionScript 1.0 developers were informing what was focused on in designing ES4...but that's exactly why you bring people into committees, to help guide what comes out of them.