Even though the Dart hate is the most recent example, I think the issue of negativity & trolling is much larger than one new language release. It seems that if anyone comes up with a new technology/idea that doesn't fit the exact zeitgeist of a particular community it is immediately & thoroughly slammed.
Having a 'thick-skin' is all well and great, but truth is a lot of people don't, and criticism hurts. Constructive criticism can be a very useful thing, but being adrift in a sea of 'constructive criticism' with not a dot of positivity in sight is just demoralising.
I know it can seem that if a bad idea is not immediately killed you will be stuck with it forever & sometimes this is the case, but not always. Sometimes things are just different, people have different ideas. If someone has a different idea that to you seems stupid, smile politely and walk (run?) away.
Bad ideas eventually become self-evident anyway, you will have just saved some time.
DART is not the product of some 16 year old hacker with a thin skin, DART is the product of a company worth $200 billion dollars and that company has enough market share to make something like DART something I have to deal with. If a 16 year old hacker came up with DART it would only succeed on it's merits, when a $200 billion dollar company invents something like this they use that money to shove this language down your throat.
Just because Google hired James Gosling doesn't mean they need to put him back to work recreating Java.
If the VM is exposed and we can compile whatever language down to DART VM byte code I'm all for it, if DART means programming in DART then I will shout from the rooftops how much it sucks in hopes I never have to deal with it.
Google didn't write DART, Google employees did. Maybe they should have known better, I don't know--I have not looked into DART at all. I recently released a project that had been funded by the US Government, but that doesn't mean it didn't suck when people trashed it in comments.
Having a 'thick-skin' is all well and great, but truth is a lot of people don't, and criticism hurts. Constructive criticism can be a very useful thing, but being adrift in a sea of 'constructive criticism' with not a dot of positivity in sight is just demoralising.
I know it can seem that if a bad idea is not immediately killed you will be stuck with it forever & sometimes this is the case, but not always. Sometimes things are just different, people have different ideas. If someone has a different idea that to you seems stupid, smile politely and walk (run?) away.
Bad ideas eventually become self-evident anyway, you will have just saved some time.