That's nice that you work somewhere within the vast organization that is Google, but again, this information comes from a source close to the Angular core team about instructions that the core team have received. Unless you're somehow party to this (which you have indicated you're not), I don't see what you can add here.
What exactly are those instructions? You or your friend have a misunderstanding. This dual-implementation will benefit the project as a whole (whether you prefer JS or Dart). That's what this is about, not to make JS a second-class citizen because evil Google wants to shove Dart down your throat.
"Teams" are made out of people. Managers, engineers. Not all people on the team might have agreed.
To the much more important point, the development of important features stalled for AngularJS as the team was busy working on Dart version. This is the main problem.
> the development of important features stalled for AngularJS as the team was busy working on Dart version.
Not true. Google grew the team. Take a look at the activity on Github. The velocity has been consistently high throughout the development of the Dart fork: https://github.com/angular/angular.js/pulse
If there was some important feature you wanted, you are always able to submit a PR yourself. That's how open source works.
