Let me ask you a simple question: Do you trust the professional opinion of someone who would complain about this? And loudly, at that? Do you think this person is representative of a majority of front-end engineers?
>> "It was rather amusing and sad. The amusing part is how the stereotype of immaturity and childishness was just re-enforcing itself."
Which community of people have established a stereotype of immaturity and childishness that was just reinforced?
>> "The sad part is that here is Google spending man months ... of work and giving it back to the community and as a thank you they got spit in the face ("how dare you release open source projects, that you spend money developing, in a direction I don't agree with!").
"Giving it back to the community and getting spit on"... Google is a for-profit company. They're not doing this for charity. There are many facets to the idea of replacing javascript as the client-side language of the web. Would that we could all act like adults when discussing this on the merits. That doesn't always happen, as we are human beings. I agree that getting angry at the Dart team is irrational and non-productive.
Okay. So what are we talking about here again? I'm still confused. Perhaps the confusion is my fault and not your own. But if you could elaborate a bit, that might help.