This.

I do a fair bit of development of Django using PyCharm. Django is BSD licensed; PyCharm is closed-source. Both are, in my view, amazing tools.

Open source platforms are overwhelmingly dominant, awesome, and (at least for web frameworks) licensed as BSD/MIT or equivalent. Open source IDEs are uh... ...let's just say they're an acquired taste, and leave it at that.

Since we're talking about Meteor, the proper comparison appears to be platforms; as a result I have to say wavephorm is full of it. If he's trying to argue that Eclipse is terrible...well, he's right, but he's on the wrong thread. ;)